and their presentations

"Why Airplanes Fly Into Hurricanes"

John Shewchuck   9 March 2020      view PDF 

John describes the People, Equipment, and techniques needed to fly into Hurricanes in order to make accurate hurricane weather forecasts.

"What The Rocks Tell Us"

    Jim Laurent
   4 March 2020     at Science Topics     view PDF 

Jim illustrates how geology exposes hidden secrets about the earth, humans, and evolution

"Frank Lloyd Wright Comes Alive"

 Drake Shepard     24 Feb 2020       view PDF    

Drake describes Wright's life and architecture while in period costume.

For Video presentation see Drake's Virtual Museum website at:

"Encryption, Part 2"

 Greg Astfalk     10 Feb 2020       view PDF    

Greg reviews Part 1 coverage of encryption basics then details public-key encryption and the mathematics embedded.  He comments on quantum computing and the disruption to current encryption methodologies..

"The Green New Deal - Green for Whom?"

    George Erickson's Book "Unintended Consequences
  of: 7 Feb 2020     at Science Topics     view PDF 

George Erickson has released to the Science and Technology and the Science Topics  group a copy of his recentlt revised  book, "Unintended Consequences".  The Book is an accompaniment to his Science Topics presentation to be given on Feb 5th, 2020,  Or go to Web source at:

"Advanced Innovation"

 Dave May     27 Jan 2020           view PDF   

Dave described Advanced Innovation techniques.  This process is known by other names:  Knowldge-Based Innovation Engineering and by the Russian acronym, TRIZ (Theory of Innovative Problem Solving).

"Encryption, Part 1"

 Greg Astfalk     13 Jan 2020       view PDF    

Greg explains reasons for using different types of encryption. 
He also describes the mathematics, methods for implementation, and the robustness of the security provided.

"Human-Induced Earth Quakes"

 Colin Pennington     23 Dec 2019       view PDF    

Colin discusses causes, effects and severity of earthquakes that were induced by human activity in Central US.


"Our Oceans"

 Drake Shepard     9 Dec 2019       view PDF    

Drake will discuss how our oceans work, examine each ocean, and detail major aquatic problems.


"The New Deniers"

  Howard Marsh      4 Dec 2019   at Science Topics       view as PDF     

A scientists's view of the corruption of the  scientific method by the proponents of the anthropogenic model for climate change.

"Rain Forests"

 Drake Shepard     25 Nov 2019       view PDF    

Drake will identify and discuss de-forestation through mining, ranching, farming, and narco-trafficking.

"Computer Display Technology Update"

 Bob Miller     11 Nov 2019       view PDF    

Bob Will describe the science and technology behind color display panels

"The Green New Deal - Green for Whom?"

    George Erickson's Book "Unintended Consequences
  of:  28 Oct 2019       view PDF 

George Erickson has released to the Science and Technology and the Science Topics  group a copy of his recentlt revised  book, "Unintended Consequences".  The Book is an accompaniment to his Science Topics presentation to be given on Feb 5th, 2020,  Or go to Web source at:

"Processing Programming"

   Gregg Cieslak      6 Nov 2019   at Science Topics       view as PDF     

Gregg Demonstrated how to download the free Processing Editor and develop a program with the Java based Processing environment.

"Hoover Dam Monument"

 Gregg Cieslak     28 Oct 2019       view PDF    

The Hoover Dam Memorial, dedicated to the over 100 men who lost their lives, was designed and built by Oskar J.W. Hansen.

According to Hansen, the reason for this monument and star map is –

“to preserve for future generations the date on which President Franklin D. Roosevelt dedicated the dam and the power plant.”

"Is English a Creole Language"

 Fred Weldon     14 Oct 2019       view PDF    

Fred explains that the "Creole" part of the origin of the English language took place in Northern Europe, NOT in England as many may think.

" 5G: Under the Hood "

 Lee Hall     23 Sept 2019       view PDF    

Covered components of 5G mobile communication.  The technologies that will enable the 5th Generation of mobile communications.  The architecture, the spectrum, the specs. The changes from 4G and the challenges for providers, regulators, police makers.

" Confessions of a Hurricane Forecaster "

 John Shewchuck     9 Sept 2019       view PDF    

A great presentation of the parts, the problems, and the processes that face a meteorologist.  A first hand account from a retired Air Force Weather Officer, John walked us through incidents and models, and explained the factors produce forecasts.

" AEDs in the Villages "

 Sal Torname     26 Aug 2019         

An AED Defibrillator is used as an interim device for lay-treatment of sudden cardiac arrest until emergency medical help arrives. This presentation covered how to increase the availability of AED devices within communities/village areas. Specifically, funding, training, processes, maintenance.

" Special Weirdness "

 Gregg Cieslak     12 Aug 2019       view as PDF    

This is a fun presentation to discuss some of the weird effects on space and time as described by Special Relativity when things travel fast. 

We'll look at time dilation, length contraction and the problems with simultaneity.

" Assessing Drug Effects on the Brain "

   Peter Irwin      7 Aug 2019   at Science Topics       view as PDF     

Peter discusses how the brain works, how drugs work in the brain, and how effects of drugs affecting the brain are assessed.

" Fly Me to the Moon,  NASA Apollo "

 Steve Frango     22 Jul 2019       view PDF     view YouTube  

Steve describes his work at Kodak to support the NASA Apollo Project.

" Communication and Support for the NASA Apollo Missions"

    Fred Weldon 
    8 Jul 2019       view PDF soon  

Fred describes his work for NASA in support of the Apollo Moon Missions.

" Quantum Weirdness "

   Gregg Cieslak 
    3 Jul 2019   at Science Topics       view as PDF     

Some weird effects like Superposition, Entanglement, and Wave/Particle Duality

as seen in Quantum Experiments are discussed:.

" The Leap Second "

    Fred Weldon 
    24 Jun 2019       view as PPTX     

The significance of the Leap Second and alternative adjustments.

" Self-Driving Vehicles and Society "

    Lou Sasmor 
    10 Jun 2019       view PDF     

What are the significant impacts that the coming introduction of self-driving (or autonomous) vehicles will have on our society? How will they affect private vehicle ownership, land use, commuting practices, safety, insurance, liability? What other social issues are impacted?

" The Science and Technology of Paint"

    Gary Janezic 
    13 May 2019       view PDF     

This talk will discuss the types of modern paints, concepts of hiding, polymer and pigment chemistry, price point and how paint is made.

" Complex Numbers, Are They Really Imaginary?"

    Gregg Cieslak
    1 May 2019  at Science Topics       view PDF     

We've previously talked about Numbers from Infinity to minus Infinity  and  the infinitesimals in between. This Presentation talks about all of the rest.

Otzi, the Ice Man "

   Drake Shepard    22 Apr 2019         view PDF   

The presentation is about a 5,400 year old frozen mummy from the Bronze Age. Drake will discuss the detailed forensic anthropology plus his life and times.

" Cryonics"

   Barry Robbins 
    8 Apr 2019       view PDF     

Cryonics is the Science and Practice of using Cold Temperature to preserve a Human Being. in this presentation Barry describes the processes,

businesses, ethics, and fears of preserving and storing humans after they are legally dead.

" Physics  of Alien Visitation"

    Jim Laurent 
    3 Apr 2019 at Science Topics       view PDF     

Did E.T. really phone home? What would it take for E.T. to visit?  Jim presents the physical limitation that ET would face in an effort to visit us, and

what it would take for us to visit him in the stars.

" Origins of Petroleum"

    Gary Janezic 
    25 Mar 2019       view PDF     

The talk  consists of a discussion of types of depositional basins, types of petroleum generated and how they are reservoired once generated. 

Chemistry of crude oils and gases generated will also be discussed.

" Cell Phone Physics "

    Jim Laurent 
    11 Mar 2019       view PDF     

A modern smart phone is the densest collection of sensors and transmitters you have ever held in your hand.  What kinds of sensors and transmitters does your cell phone have and how do they work?

Gold and Diamonds "

   Drake Shepard    25 Feb 2019         view PDF   

This presentation includes the origin, history, and uses of diamonds and gold, plus how diamonds are cut and sold.

"Bicycle Physics"

    Jim Laurent
    11 Feb 2019       view PDF 

Jim describes the bicycle as a combination of simple machines, the physics of riding and the physics of human exercise.  When all things are considered,  the ride is both healthful and fun. 

Radiation 101 - Why That Guy or Gal Looks "Hot" - and - Climate Change Demands More Nuclear Power "

    George Erickson's Book "Unintended Consequences
    28 Jan 2019       view PDF 

George Erickson has released to the Science and Technology group a copy of his recent book, "Unintended Consequences".  The Book is an accompaniment to his presentation of Jan 28, 2019,  re: the consequences of not developing the use of alternate nuclear power sources

"  Bits, Bytes, et al.  and how computers really operate  "

   Greg Astfalk    14 Jan 2019       view PDF    

Greg explains how information is presented within computers, including the computer's instructions.  He describes how computers, including smart phones, actually operate.  He offers impressive numbers regarding the attributes of our processors and computers.  The audience receives a new and better understanding, and appreciation, of computing devices.

" How Humans made Language and How Language made Humans "

    John Blackwell 
    10 Dec 2018       view PDF    

A critical look at the class of language and communications through the review of author Derek Bickerton and his book:  "Adam's Tongue."  Supporting John's presentation:  Ted Talk on the way we think.

" The New Kilogram "

    Gregg Cieslak
    26 Nov 2018       view PDF    

Le Grand K is officially retired as of May of 2019.  The kilogram and other measures will adjust their basis of determination of accuracy.

" A Look Back on 2018 "

    Lee Hall 
    26 Nov 2018       view PDF    

A collection of links to topics that surfaced strongly in the science and technology fields during the past year.

Lithium Batteries and Worldwide Lithium Resources "

   Michael Pinski    12 Nov 2018       view PDF       view pptx 

This presentation covers considerable detail.  The strengths and characteristics of Lithium.  Why it is used for batteries, where it is found.  Battery components and architecture.  Recent developments that will change the next generation of batteries.

Ancient Egypt Revealed "

   Drake Shepard    22 Oct 2018       view PDF    

This presentation covers the pyramids, pharaohs, tombs and temples and how these ancient people lived and worked through multiple dynasties.

Biological Clocks and Gene Expression "

    Lee Conrad    8 Oct 2018       view PDF    

A master clock in the brain called the suprachiasmatic nucleus, or SCN, acts as the circadian pacemaker.  The SCN is located in the hypothalamus and receives direct sunlight input from the eyes.

Tour into Microbiology "

    Lee Hall
    24 Sep 2018       view PDF    

An outsider's view of the genetics, biomes, and factors influencing massive changes in molecular worlds.  This is a high-level survey.

Robotics 001 "

    Gregg Cieslak
    10 Sep 2018       view PDF    

A look at the history and change is the field of robotics.

" Copper Exploration in Papua New Guinea 1971-1972 "

    Bob Galbraith
    27 Aug 2018       view PDF    

Personal adventure searching for copper in a far away land.  In 1970, Kennecott Copper Corporation made an agreement with the New Guinea Administration granting Kennecott exclusive rights for 2 years to explore 22,000 square miles located in the central highlands of Papua New Guinea.  Kennecott immediately stumbled onto what was initially believed to be the largest copper deposit in the world.  This talk will disclose how this was done, how the deposit was finally defined, how the exploration of this huge area was completed and an introduction to the people involved.

" Measurement "

    Gregg Cieslak
    13 Aug 2018       view PDF    

Science is about measuring things.  Gregg took and in-depth look into what and how and why each domain can be measured.

" An History of the Transistor "

    Bob Miller
    23 July 2018       view PDF    

This presentation describes the development of the component that is the foundation of most of today's electronic devices:  the transistor.

" Global Eradication of a Tropical Disease - Tools and Strategies "

    Ron Ballard
    9 July 2018       view PDF    

This presentation covers the World Health Organization's globals and successes eradicating a disfiguring childhood infectious disease called YAWS.  Using tests developed in his laboratory at the Centers for Disease Control (CDC), Ron Ballard walked through the strategies, process and tools that resulted in extraordinary outcomes.

" The Natural, Supernatural and the Screwy "

    Jack Brush
    25 Jun 2018       view PDF    

An examination of prior and current eras when the supernatural and science blended in explanations.  The super-intelligence of the future with compete and perfect human intelligence, not unlike the relationship in the past between supernatural and natural.

" The Nature of Our Universe - A Heretics's Concept "

    Howard Marsh
    11 June 2018       view PDF    

This presentation examined the laws of physics' explanation of the beginning of the Universe.  Are they consistent in their explanation and where do the models conflict.  Howard Marsh is a physicist, BS from RPI,  PhD Cornell 1969 with a 42 year career as a defense scientist.  

" Cosmology: A Thought Experiment "

    A.M. Albisser
    28 May 2018       PDF coming    

The Alpha and Omega Singularities:  The Universe from before the initial  Big Bang to after the final Big Crunch.

" Lightning "

    Len Hathaway and Bob Freeman
    14 May 2018       view PDF    

This summary sheet covers some of the material presented during the presentation.  The speakers spoke of personal safety issues, protection systems for home, surge protection, CSST gas pipe and myths that are commonly repeated.

" Artificial Intelligence and the Technological Singularity "

    Barry Robbins
    23 Apr 2018       view PDF    

An exceptional presentation that spans a wide collection of ideas blended into a coherent  and current and commanding study.  Singularity is the hypothesis that the invention of artificial super-intelligence will abruptly trigger runaway technological growth that will transform human civilization in un-imaginable ways.  ... or simply end it.

" All About Dinosaurs "

    Drake Shepard
    9 Apr 2018       view PDF    

The environment and time of the dinosaurs.  Who they were and how they evolved. The theories of extinction.  Drake's presentation is as entertaining as it is detailed.  Very rich.

" Humidity"

    Bob Miller
    26 Mar 2018       view PDF    

Bob discussed the details of defining and determining Humidity and its effects on people and things.

" Climate Change: Reality vs. Pseudoscience "

    Howard Marsh
    12 Mar 2018       view PDF    

Howard will present and analyse the data that he collected with regard to Global Climate Change.

" LED Lighting "

    Jim Laurent
    26 Feb 2018       view PDF    

A solid look at LED lighting technology.  Jim covers development, state, and examines today's uses of LED lighting.

" Air Traffic Control  101 "

Rick Pelkowski    12 Feb 2018       view PDF 

Everything you wanted to know about Air Traffic Control... but were afraid to ask.

"  A Debate: Global Warming "

    Don Fogg and Ira Glickstein
    22 Jan 2018        view PDF        view PowerPoint          

Presenting evidence affirming and negating global warming, Don Fogg and Ira Glickstein debated the issue.  We heard and discussed opposing and supporting views.

   (Click "Open with Google Slides" when viewing PowerPoint presentation.   PowerPoint added because some transitions obscured slide info in PDF view

" Hurricane Trends "

    Steve Martin
    8 Jan 2018       view PDF    

Steve's informative analysis addressed the questions:  Are the hurricanes in the North Atlantic increasing in number?  Increasing in intensity?  He discussed data eras: the impact of improved technologies in observations and data measurement, the impact of time window on trending line.  Steve Martin's statistical analysis is a great model for those measuring the depth of an hypothesis.

" Unintended Consequences "

    George Erickson's Book
    26 Dec 2017 (addendum to  27 Feb 2017)       view PDF 

George Erickson has released to the Science and Technology group a copy of his recent book, "Unintended Consequences".  

The Book is an accompaniment to his presentation of Feb 27, 2017,  re: the consequences of not developing the use of alternate nuclear power sources

" Climate Change "

    Don Fogg
    11 Dec 2017       view PDF 

Many question whether the earth's climate is changing.  Don presents a look at the science behind and data supporting the Climate Change view.

" What You Didn't Know About Bees "

Bob Galbraith    27 Nov 2017       view PDF 

A look at honey bees, identity, challenges.  Having managed hives in the past, Bob highlights the issues and processes of the beekeeper, explaining bee space and operations.  He also covered findings of recent studies.

" Cancer Immunotherapy with CAR-T Cells "

Lee Conrad    13 Nov 2017       view PDF 

Some advanced cancers can now be treated successfully by genetically engineered CAR T cells that are more powerful and longer-lasting than any found in the body.  

" Managing Reactive Chemical Hazards from R&D to Production "

Michael Pinsky    23 Oct 2017       view PDF 

The management of reactive chemical hazards is key to lowering the risk of incidents in order to provide a safe workplace in the laboratory or production plant.  Lowering the risks is based on understanding the behavior of all the chemical interactions involved, not just the intended reaction.  Specific catastrophes were examined.

" Linear Algebra 

     Greg Astfalk    9 Oct 2017        view PDF 

Linear algebra is a core technology for much of numerical mathematics.  All the simulations we do today, such as weather prediction and mechanical design, use linear algebra.  The speaker will develop the topic, detail the classic algorithm, provide examples, and enumerate how difficult it is, even for today's computers.

" How Humans Evolved "

Drake Shepard    25 Sep 2017       view PDF 

A highlight of our humanoid ancestors, going back 5 million years, this presentation discusses how our bodies and minds evolved into modern man.  Focus is on scientific interpretations of evolution/change sans creations.

" Hurricane Irma "

  Meeting cancelled     11 Sep 2017         

"Citizen Science 

     Lee Hall    28 Aug 2017        view PDF 

Gaming, apps, digitization have changed the nature of Citizen Science projects and participants.  This review gathers projects and processes that are now prevalent in science studies.  The larger  change impacting science studies is coming:   Open Access.

" Consequences of a Discrete, Deterministic Universe "

Ira Glickstein    14 Aug 2017        view PDF 

Ira presented the arguments for a deterministic universe.  Energy comes in discrete, non-continuous Quantum packets.  If Matter, Space and Time are similarly Quantized, we may speculate that the entire Universe (i.e. Energy/Matter, Space/Time and the "Laws of Nature" that apply to how these entities interact) is discrete and non-continuous, and therefore may be deterministic.

" The Solar System 

Mike Richardson    24 Jul 2017        view summary notes (doc) 

From his Learning Center lecture series, Mike Richardson presented an illustrative summary of the Solar System sizes, shapes, properties and motions.  

" Do Neutrinos Travel Faster than Light "

John Blackwell    10 Jul 2017        view PDF 

John discussed results from research into the properties of cosmic neutrinos. 

" The Atom "

Gregg Cieslak    26 Jun 2017        view PDF 

Gregg covered the history of the Theory of the Atom and the development of the Standard Model.


" Mission to Mars"

Drake Shepard    12 Jun 2017        view PDF 

This presentation listed, compared, forecasted the human induction on Mars.  Drake Shepard's images are as rich as his narrative.  Among topics covered were logistics, transport, colonization and the looming challenges of each.  NASA-SpaceX , 'dragon' payloads, rocket architectures were investigated.  Colonization will depend heavily on level of funding in order to scale the remaining challenges.

" Color "

Bob Miller    22 May 2017        view PDF 

In his presentation, Bob looked at the sources of color including colored lights, dyes and pigments and interference colors.  Also how the eye perceives color and how colors combine.  The production of color in various display technologies and some historical developments in dyes were discussed.

" Things That Go Rot in the Night"

Phil Geis    8 May 2017        view PDF 

What do we know of bacteria, molds, fungi?  About 1%.  Phil Geis gave us an enlightening view of just how much that 1% covers our daily routine.  This is a great presentation on microbes and preservatives and fungi ... and touch points of the Origins of Life.

" Space, Stars and You"

Drake Shepard    24 Apr 2017        view PDF 

Attending this lecture gave a full compression of all elements of our cosmology.   What is observed, what is inferred, what has evolved.  Drake presented a humbling perspective of relationships among galaxies, universes, stars, planets to define a personal cosmic address.  A glimpse at the 'Hubble replacement' and a 'we're working on it' attitude points toward much more to come than just an expanding universe.  (If you missed this presentation, you missed him "paint pictures with numbers".. very big numbers.)  

" Using Brain Network Activation to Better Understand Aging Brain Health "

Mitchell Roberts    10 Apr 2017         NO pdf  ( I assume their patent lawyers would have to shoot us...)

The Villages Health Research Unit presented one of their clinical research trials currently being conducted in The Villages:  Brain Network Activation is a tool that may replace or retire current intense radiation testing.  Mitchell Roberts is Unit Site Supervisor.  He described the trial plan, objectives and methods.  This specific study is intended to baseline the older brain from a large population.  To volunteer, you may contact him at

" Computer Virtualization"

Jim Laurent    27 Mar 2017        view PDF 

What it is and how to use it.  Some applications are specific to a single operating system.  With computer virtualization, you can run multiple operating systems on the same hardware.  Jim shows us how.

" Color "

Bob Miller    22 May 2017        view PDF 

In his presentation, Bob looked at the sources of color including colored lights, dyes and pigments and interference colors.  Also how the eye perceives color and how colors combine.  The production of color in various display technologies and some historical developments in dyes were discussed.

" 3D Printing "

Janalyn Peppel    13 Mar 2017        view PDF 

Janalyn Peppel is an educator.  She is in need of advocators to help incorporate this technology into our Florida schools and curriculums.  Kick starting our next generation.  She presented the components (hardware and software).  She demonstrated 3D printing of a gear component. She showed the current applications in a wide array of industries.  It is the integration of design, materials, engineering, creativity that will create new job opportunities, new solutions, new perspectives. Contact Janalyn Peppel  ( to help integrate this technology so our children are prepared for their future.

" Unintended Consequences: The Lie that Killed Millions and Accelerated Climate Change"

George Erickson    27 Feb 2017        view PDF 

This discussion covers the Nobel Laureate whose fraud created our unrealistic radiation standards and crippled the development of safe nuclear power.  George emphasizes  homesis and the liquid fuel reactor:  molten salt.

" Partial Differential Equations and the Finite Element Method "

Greg Astfalk    13 Feb 2017   view PDF

Greg Astfalk presented the Finite Element Methodology and  the use of corresponding Partial Differential Equations. Background details are presented in the paper by Greg describing the Finite Element Methodology and the underlying mathematics.

" 10,000 Year Clock "

Gregg Ciesiak    23 Jan 2017        view PDF 

This is an examination of how one foundation tackled the problem of longevity.  A clock for 10,000 years.  The complexity of the elements of design, engineering and material science that will result in an integrated device that will function and be understood by a world not likely to have the same language nor mechanics that exist today. This presentation looks at the history of timekeeping and the mechanics that can be carried long into the future. 

" Why Solar sucks, Wind blows and Nuclear shines: The Evidence "

George Erickson    9 Jan 2017        view PDF 

Advocating for of nuclear power, this presentation contrasts energy resources for today and tomorrow.

" What in the World is a Leap Second? "

Fred Weldon    12 Dec 2016        view PDF 

An explanation and history of what a LEAP Second is and why we have a "Leap Second".  Fred Weldon presents elements of time:  1) figurative second, 2) "Solar Second", 3) "Atomic Second", 4) "Leap Second" and contrasts each of them.  

" Birth of Environmental Cleanups "

Bob Galbraith    28 Nov 2016        view PDF 

The RCRA Resource Conservation and Recovery Act of 1976 brought challenges to those charged with implementation.  The entire process required an evolution in thinking in order to succeed fulfilling the intent.  Bob Galbraith gives a first hand account of the process, and a walk-through of a successful case study.

"How Adaptive Optics Won the Cold War"

Bob Tyson    14 Nov  2016      view pdf  soon 

For President Reagan to have the verbal ammunition to negotiate with President Gorbachev, the science behind "Star Wars" had to work.  The adaptive optics of the laser-based weapons was one of the defining technologies of the missile defense system.  Bob Tyson explains how the adaptive optics was successful.

" Apollo 11-17:  How the Space Age Enriched our View of the Natural World "

Lee Conrad    24 Oct 2016        view PDF 

A first-hand, side-line account of the Apollo projects extraordinary contribution to the shift in our perspective of our planet to that of a 'PLANET', a whole entity.  This is an exceptional pictorial of the individual missions and review of their contributions.

" CRISPR-Cas9 "

Lee Conrad    10 Oct 2016        view PDF 

CRISPR-Cas9 is a new gene-editing technique transforming science - and raising difficult questions.  CRISPER lets scientist EDIT with ease, the human genome or animal or plant ...  It allows us to alter human evolution.  Only 4 years old, this discovery is transforming research into how to treat disease.  Lee presents the salient details and maps the current content for an exploding segment within the scientific community.

"BEARS, SuGO and FIRST - a quick primer"

Dusty Huxford    26 Sep 2016        view PDF 

This presentation introduces us to an education-based community effort.  The overall objective of BEARS is to promote STEM expansion, education and careers to Villagers and the surrounding area using robotics as an exciting platform to encourage further involvement.  BEARS builds excitement about robotics through a series of initiatives involving FIRST Robotics and SuGO.  BEARS presentation will provide an overview of FIRST and SuGO and how these robotics platforms are building excitement about STEM for Villagers and the surrounding area now and into the future.  For status and updates, visit their website:

"WIFI: How has it gotten so Fast?   Part 1 - WIFI Frequencies, Channels and Signals"

Steve Martin         

                 8 Aug 2016   Part 1: Frequencies, Channels, Signals 

                12 Sep 2016  Part 2: Digital Modulation, MIMO

 Steve delivered an exceptional 'conference-grade' presentation on WIFI, examining the underpinnings of the WIFI technology, past to present.  His focus is on the evolution of the protocol standards and engineering methods that, now, can offer speeds as much as a thousand-times faster than the original WIFI release.  Part 1 covers basics, spectrum frequency, channel width and signal modulation.  Part 2 takes us deeper into the enabling methods of digital modulation and MIMO techniques.

"SETI: the Search for Extraterrestrial Intelligence"

Bob Averitt and Phil Hubek    22 Aug 2016        view PDF 

Bob and Phil prepared an historical look at the SETI project.  Radio Telescope systems were examined.  Each collecting more data than can be reasonably analyzed given current resources.  Citizen contributions to reducing the backlog of raw data collected from the program is succeeding.  The SETI@Home system installs as a screen saver on citizen systems, utilizing the idle cycles to analyze the raw data downloads, and swap for a new set of data.  Each of us is invited to join the SEARCH.

"Everything Worth Knowing About Stem Cells"

Lee Conrad    25 Jul 2016        view PDF 

Lee integrated important Stem Cell topics in this presentation:  Stem cell basics (how derived, classifications of cells), the controversy surrounding Stem Cell research, cell sources (embryonic, adult, induced pluripotent), patient-specific stem cells, current therapies, potential therapies and a look at remaining challenges.  

"Challenge to Place a Man on the Moon"

Steve Accurso    27 Jun 2016        view PDF 

Steve's presentation chronicled the early history and implementation of the American Space Program.  His examination included a detailed look at the Mercury, the Gemini and the Apollo projects.

"How Do You Know the Earth Orbits the Sun?  You Don't"

Fred Weldon    13 June 2016        (not yet available) 

It took centuries to work to finally convince the World that the Earth 'moved'.  Fred Weldon reviews the history of the science and arguments on the Earth's place in the Universe.

"Visualization:  to Expedite Understanding"

Ira Glickstein    23 May 2016      view PDF     

Personal computers, tablets, smartphones and associated software have become ubiquitous in our lifetimes.  They put unprecedented control, computation, and animated display capabilities into the hands of scientists, engineers and "children" of all ages among the general public.  Ira Glickstein demonstrated the power of VISUALIZATION tools and techniques now available to advance understanding and clarity.  Many of these techniques are featured on his blogsite:

"Update: Quantum Computing"

Lee Hall    9 May 2016      view PDF     

Since the end of 2014, considerable discoveries have evolved in the field of quantum computation.    This presentation looked at the progress in error correction and algorithms, the prospects in materials and architectures, and problems of integration.  The following links are offered for those interested in diving deeper into the current activities.

Quantum Computing.  Robert Schoelkopf, Yale, Feb 2015 (5min)

Experiments Toward Braiding:  Status and Plans for Majorana-based Quantum Information.  Charles Marcus, Niels Bohr Institute, May 2015 (1h7min)


"Orthopedic Surgery and Stem Cells"

Joseph Purita, MD    25 Apr 2016      view PDF     

Dr. Joseph Purita covered current  ....PRP injections induced healing .

"Piloting A Ship Through The Panama Canal"

Kenneth Puckett    11 Apr 2016      website     

Captain Puckett's presentation walked us through the various steps required for a safe transit of the Panama Canal.  He explained the duties, responsibilities and relationships among the Capitan, Crew, and Pilot.  The mechanics and challenges.  He shared his personal experiences as a Panama Canal Pilot.  


Bob Miller    28 Mar 2016      view PDF     

In 1967, Benoit Mendelbrot asked:  How long is the coast of Britain?   Providing a way to calculate a definitive answer to his question, he coined the term "Fractal" in 1977.  His reworked publication in 1982, 'The Fractal Geometry of Nature', consummated 300 years of mathematicians' groundwork contributing significantly to the study of linguistics, financial markets, chaos theory.  Bob Miller demonstrates clearly, the natural fractal geometry in our practical lives.

"Compendium:  NASA Deep Space Network,  Voyager I and II, and Teaching Spanish at a Resort Hotel"

Fred Weldon    14 Mar 2016        view PDF 

An informative recap of where we are today:  Review of the NASA Deep Space Network plus Status of Voyager I and II.  (And a quick pictorial of Teaching Spanish in Spain )

"The Return of Non-volatile Memory"

Greg Astfalk    22 Feb 2016         view PDF

Memory is a necessary and critical component of all computing, from embedded devices to supercomputers.  Memory today is volatile, which carries advantages and disadvantages.  There are many leading indicators that point to memory becoming non-volatile in the not too distant future.  Interestingly, until early 1970s, memory was non-volatile.  WHEN (not if) this transition occurs, there will be a profound impact on computing as we know it and practice it today.  A proverbial "Big Deal".  Beginning with a brief history of memory, Greg Astfalk covered why memory is so fundamental, why it will be non-volatile and what the implications are on future use.

"ARGUS-IS: Autonomous Real-Time Ground Ubiquitous Surveillance Imaging System"

Brian Leininger    8 Feb 2016        

The largest of the new generation of wide-area surveillance systems is ARGUS-IS.  The Autonomous RealtIme Ground Ubiquitous Surveillance Imaging System is a 1.8 GIGA pixel color camera that can capture 90 square kilometers (36 square miles) of locational specific detail in a single image.  Brian Leininger discussed the  capabilities of modern wide-area systems, showing imagery and test flight video.

"Ocean Acidification and Its Consequences"

George Erickson    25 Jan 2016        

Potential remedies and new designs for highly efficient SAFE nuclear plants that can consume the waste we have been storing. These all relate to Ocean Acidification.  Re-thinking nuclear power plants in contract to renewables.

"Optics for Older People's Eyes"

Bob Tyson    11 Jan 2016        

A discussion of the function of the human eye from an optics point of view with emphasis on how it changes as we age.  Covering parts of the eye, common conditions of aging, measurements for correction.

"How GPS Works"

Brian Leininger    14 Dec 2015       view pdf    

Global Position Systems, GPS, has become an integral part of every day life.  Brian Leininger walked us through the history and the current developments in this technology.  An excellent presentation that looked at the individual components, the challenges and the sophistication that has transpired.

"Copper Exploration in Papua New Guinea"

Robert Galbraith    23 Nov 2015       view pdf    

An insightful oral history of mineral exploration was shared with those of us that vividly remember the industry-community shifting of powers  pinnacled by Allende nationalization of Kennecott's Chilean 'interests' in 1971.   In 1970, Kennecott Copper Corporation made an agreement with the New Guinea Administration granting Kennecott exclusive rights for two years to explore 22,000 square miles located in the central highlands of Papua New Guinea.  Kennecott immediately stumbled onto what was initially believed to be the largest copper deposit in the World.  Introducing people involved, Bob enriched us with a first-hand account of how this was done, how the deposit was initially defined and how the exploration of this huge area was completed.

"Astronomy:  "

Michael Richardson    9 Nov 2015            

Mike gave an excellent (very near impromptu) presentation to the club, walking us through constellations and their important stars.  The measures of distance, and calculation of movement.  The change in positions across the sky.  One of our top speakers.   

"Adaptive Optics: Un-twinkling the Stars"

Bob Tyson    26 Oct  2015      view pdf    

Various aberrations in the atmosphere intermittently block and distort the starlight arriving at the Earth's observing sites.  Our theoretical physicist, Bob Tyson, walked us though a clear and concise and definitely a  fun presentation of the mechanics behind adaptive optics.  This technology is achieving phenomenal improvements in imaging.  Further reading for us laymen:  Bob Tyson published  Lighter Side of Adaptive Optics


"How Do We Know The Earth Moves ... We Don't"

Fred Weldon    12 Oct 2015       view pdf     

When and how was the "proof" given that the earth moved?  What in heaven's name is "Copernican Universe"?  Fred Weldon follows the history of the un-sung navigators and acceptance that dislodged the Earth from the center of the universe.

"Numbers: How Big is BIG?"

Gregg Cieslak    28 Sept 2015       view pdf    

People are often presented with large number information like the distance to stars, the age of the Earth or the size of the national budget.  But, do we really have a feel for how large those numbers are?  People also say that something is infinite when describing large things.  Did you know that there is more than one kind of infinite?  Gregg has always been fascinated with numbers and presents a comparative study of very large and very small numbers and associated objects to familiarize you with the real magnitude of Numbers.

"Alzheimer's - Latest Developments with Monoclonal Antibodies Possibilities for FDA Approval"

Lee Conrad    14 Sept 2015       view pdf     

Extending his previous presentation, Lee Conrad updates his continuing in-depth monitoring of advances in Alzheimer's Disease (AD) research and findings.  Specifically, a quick review of biomarkers, the Clinical Trial Process, leader results and future directions.  He looks at AbbVie and C2N antibody license agreement, possible FDA approval for AD drug (3-4yrs), one of the possible triggers for AD.  Assistance to volunteers in locating clinical trials and what to except is also offered.  

"What You Didn't Know About Bees"

Robert Gailbraith    24 Aug 2015       view pdf    

This talk introduces you to honey bees:  how to identify them, their anatomy,  what bee space is, where wax comes from, facets of the honey comb and the comb functions.  Robert reviews a brief history of bee keeping and the influence of local researchers.  Many researchers have proposed that the bee colony is like other structures in nature:  a mammal?  Getting started as a beekeeper, extracting honey and wax, issues facing beekeepers today plus the society of bees themselves:  controls of activity, responsibilities and delegations.  This exceptional presentation and case study is lively and entertaining.

"Are You Ready for 2025"

Joe Bakel    10 Aug 2015         

Life will be interesting in the year 2025.  Joe Bakel presents a summary of his research on technology developments that are coming to fruition:  how they will impact the way we live, we work, we play.  A forward looking and thought provoking set of images of where we are heading.

"The Carbon Cycle "

     Tom Leonard    13 Jul 2015         

Carbon is an element that plays a critical role in our environment  It is vital to the chemistry of life on earth.  Tom describes how this element is involved and utilized as it migrates through its cycle.

Visualizing Einstein's Special and General Relativity"

     Ira Glickstein    22 Jun 2015        Reference Site    

While we all recognize the importance of Einstein's Theories of Special (1905) and General (1915) Relativity, for Ira Glickstein, as an engineer, the complex math leaves him cold and frustrated by an inability to 'visualize' the 'slowing down of Time' and the 'contraction of Space' that occurs at high velocity and/or high acceleration.   Having wrestled with these theories this pas year, he has developed an interesting (perhaps unique) way to visualize 'Relativistic' effects and their (perhaps surprising) consequences.  Dive deeper into his concepts and perspectives at his website:

"Astronomy Part 1: A History of Astronomy up to Newton"  and  "Astronomy Part 2:  Astronomy from Newton to Present"   

    Michael Richardson    8 Jun 2015   Part 1 early history pdf      27 Jul 2015   Part 2 storied history pdf 

Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, and astrological beliefs. Ancient astronomers, like Aristotle, were able to differentiate between stars and planets, as stars remain relatively fixed over the centuries while planets move an appreciable amount during a comparatively short time, but it was not until the 16th and 17th centuries that the first to attempt to derive mathematical predictions of celestial phenomena in astronomy. Part 1 looks at the earliest history. Part 2 follows a progression of 'interesting stories' that comprise the science of astronomy through time.

Michael Richardson's Astronomy series is presented with materials through the Villages Lifetime Learning College.

"Broadcast Digital TV Reception:  a technical perspective"

Steve Martin    25 May 2015       view pdf    

Broadcast digital television offers many advantages over the old analog broadcasts, including high definition pictures, Dolby 5.1 surround sound, multiple language tracks, and a huge increase in the number of available channels.  Technical differences between digital and analog broadcasts, along with marketing hype, can cause confusion over what is needed to receive over-the-air television signals.

Steve explains the results of his home-base laboratory investigation:  implementing digital TV reception in the Villages, sans cable.  He discusses antenna selection, amplifiers, channels and signal strengths.  Very practical.  Extremely informative.


Bob Miller    11 May 2015       view pdf    

Laser technology is used in simple devices like bar-code scanners and pointing devices.  Lasers are also used in medical instruments like blood chemistry sensors and scalpels for precise surgical incisions.  Bob Miller looks at the development of the technology, the types and construction, and its current day applications, including advanced weaponry.

Further Reading:  Beam, Race to Make the Laser by Jeff Hetch, 2010


"Technical Ideas for the Origin of Life"

Phil Geis    27 Apr 2015       view pdf    

Most Science estimates life on Earth began about 3-4 billion years ago.  Working backward under the theory of evolution, an understanding of past and current life form progression, continues to be established.  However, no theory has been accepted for the beginning of life, a concept that itself has no easy definition.

Creation or initiation of life on Earth is an unimaginably improbable phenomenon that occurred at least once and has not been observed since.  I will discuss concepts that inquire at the edges of life's beginnings, none of which has risen to the level of scientific theory.

"What Makes Us Human"

Lee Conrad    13 Apr 2015       view pdf     

Comprehending that the Earth's evolution began 4 billion years ago is difficult for most.  Presented within the context of a 24-hour day, Lee Conrad clearly presents an understanding of evolutionary time.  His presentation discusses: 

  •     The conventional view of the Origin of our Genus, Homo
  •     How going hairless had profound consequences on subsequent phases of evolution
  •     The iconic molecule called DNA
  •     The importance of the Human Genome to expressing our many evolutionary traits ( eye color, height, weight, build structure, etc )
  •     Tracking the origins of modern Humans from Africa to the Americas 
  •     Alphanumeric genetic markers that express patterns occurring in Mitochondrial DNA to Y-Chromosomes to the whole genome  

Lee Conrad looks specifically at the distinctive DNAs.  Discovery of the 1st distinctive DNA to humans,  HAR1 (Human Accelerated Region 1) played a role in the developing of cerebral cortex.  Five other distinctive DNAs  (FOXP2, AMY1, ASPM, LCT, HAR2) are functionally examined, along with the rate of change over tens of thousand of years:  the painfully slow process of natural selection. 

"Alan Turing's Wonderful Machine"

Dan Sullivan    23 Mar 2015       view pdf    

The popular movie, The Imitation Game, tells the story about how Alan turing invented a machine that decoded German military messages in World War II.  Turing is credited with cutting two years off of the war by doing this.

But before that, in 1937, he published a paper in Proceedings of the London Mathematical Society about the kind of numbers people could compute.  To prove what he claimed in this paper, he invented a different machine:  a computing machine which later became known as a Turing computer.  The title of the paper was "On Computable Numbers with an Application to the Entscheidungsproblem". Though this paper was about mathematics, it is the foundation of just about everything we know today as Computer Science and the Theory of Computation.

Dan Sullivan presents the paper in a clear and understandable format.  He covers what a computing machine is, the incredible insight Turing had into the automatic computation of numbers, and what we commonly refer to today as 'computing'.  The talk covers the mathematic problems Turing solved, and at least for some of them, how Turing solved them.  He shows how a Turing machine works and how it relates to computers today.    


"Physics & Chemistry of Thermal Insulation"

John Murphy    9 Mar 2015       view pdf     

We utilize insulation in our clothing, in our homes, in our refrigerators, and in our Space Programs. This talk will give you a deeper insight into the physics and chemistry involved in protecting us [and our property] from environmental damage… and from damaging the environment! We will investigate some of the many forms of insulation in commerce in the past and currently used today, and what looms in the future. We will follow changes in the refrigeration industry that have been legislated to protect the environment, and in the space program that have been implemented to better protect their instrumental and human cargo. The ideas presented here are meant to give a deeper understanding of the physics involved, and some of the chemicals used in thermal insulation to bring us to where we are today. 

"Personality Profiling - a personal experience"

George Leonovich    23 Feb 2015       view pdf    

Why is the adage " I'll treat my employees like I want to be treated " ABSOLUTELY wrong!  How do we identify when and where it is inappropriate.  What have we learned.  

"Creative Thinking Process"

     Lindsay Collier    9 Feb 2015           view pdf 

A look at where new thinking comes from and some of the techniques that can be used to tap the tremendous creative capacity of people.    

"Status YE 2014:  Quantum Computing"              

     Lee Hall    26 Jan 2015       (51min video available on request)     
                                                                                                              .... sorry no download: 2.4GB took too much of our small slice of free cloud...

An encapsulated view of the present day efforts toward the implementation of quantum computers. The video presentation extracted highlights from the following full-length talks:

        Designing of a Superconducting Quantum Computer,  John Martinis, University of California, Santa Barbara

        Evolving Scalable Quantum Computers,  Eric Lanizinsky, DWave Computing, Vancouver

        Phosphorous Ion Trapping University of New South Wales

        Universal Quantum Computation, Michael Nielsen, Quantum Computing for the Determined, 

        How to build a Quantum Computer - Charles Marcus, Niels Bohr Institute, Copenhagen

        Diamonds in Quantum Computers - Nicolas Wohrl, Material Scientist   (in english.... only introduction is german)

        Theory of Quantum Annealing  -  Hidetoshi Nishimori, Tokyo Institute of Technology



"Maxwell's Equations of 1862, and the Modern World"              

     Fred Weldon    12 Jan 2015             view pdf     

A brief review of how Maxwell's equations influenced the modern world of today.  


        What age-old question was answered by Maxwell's Equations?

        What new, unexpected discovery was predicted by these equation?
        How much of the U.S. economy is based on Maxwell's Equations and their influence?        

How his equations influenced:    

        Discovery of "Quantum Mechanics"  by Planck

        Einstein's special theory of relativity

        The invention of Radio, Radar, Television, Microwave Ovens and Cell Phones.

"Linux / Unix Operating Systems"

     Michael Williams    22 Dec 2014       view pdf    view ppt

Everything you wanted to know about Linux/Unix operating systems but were afraid to ask.    


"What is a Leap Second"              

     Fred Weldon    8 Dec 2014             view pdf      

What is and Why do we have a Leap Second?  What is a Second?  What is Time?    


"10,000 Year Clock"

     Gregg Cieslak    24 Nov 2014        view pdf

Gregg Cieslak describes some of the design considerations for the clock and the reasoning for a project developed by "The Long Now Foundation".  A large clock is currently under construction in a mountain cave in west Texas and is espected to run continuously for the next 10,000 years.    



"Lies, Damn Lies, Computer Models and Government Subsidies"

     Ira Glickstein    14 Nov 2014        

Modernizing Mark Twain who famously quipped "there are three kinds of untruths:  Lies, Damn Lies and Statistics"  Ira Glickstein will discuss and demonstrate computer models including multi-factor weighted decision making, Bayesian analysis, and the Nash-bargain that may be utilized to "scientifically" justify individual, corporate, and government "investments" for technological projects.  He will consider the military research and development, the space program, climate change, solar power and health care as examples of both wise and unwise use of public funds.       

"Rise and Decline of the U.S. Textile Industry"

     Bob Hansen    27 Oct 2014        

Bob Hansen asses the American textile industry.  He reviews history and future, covering a breadth of perspectives:  What are Textile Fibers?   Where are they consumed?  A Brief History:   What Happened and Why.  How the industry is Structured.  Competition, Economics and the Failure of Leadership.          

"Event Data Recorders"

     Robert McElroy    13 Oct 2014        view pdf

Robert McElroy addresses technology and specific issues with Event Data Recorders in today's cars and commercial trucks.  These devices are frequently referred to EDR devices or "Black Boxes".  They are associated with 5 modes of transportation:  aviation, marine, rail, pipeline and roadway.  An introduction to the five modes of transportation EDR devices and their history, precedes a specific focus on aviation and automotive devices.          

"Manufacturing Technology in Japan" 

     George Leonovich     22 Sept  2014        view pdf            

In this presentation, George Leonovich presents the techniques employed by Japanese manufacturers that allow their employees to work smarter, not harder.  This allows for Japanese manufacturers to produce high quality products at a lower cost in a timely fashion with minimal waste.

"Solar Energy"

     John Swanson     8 Sept  2014

This presentation focuses primarily on photo-voltaic solar generation of electricity.  John provides details on technological and financial results for current solar installations as well as his expectations for some high-value near-term future work.

"The Hexagon Program:  Iron Curtain Espionage by the U.S."

     Paul Petty    25 Aug 2014

Paul explains The Hexagon Program which was a massive, multi-billion dollar effort to enable the US Government to see behind/over the Iron Curtain during the Cold War.  It was a clandestine program (Satellite Photographic Reconnaissance System) conducted in absolute secrecy.  Hexagon was declassified 17 September 2011, 25 years after the last (20th) launch.  This was the first public acknowledgement of its existence.

"Conceptual Approach to Flight Dynamics and Flight Testing in Flight Simulations"

     Joe Fernandez    11 Aug 2014

Joe describes of the physical laws of Flight Dynamics from the conceptual view and then relates these phenomena to a minimal set of mathematical relationships that apply to Flight Testing and Flight Simulation.

What is a Computer Program

     George Leonovich     28 Jul 2014

What is a Boot program?

What is an Assembler Language?

What is a Compiler?

What is an Operating System?

What is an Application Program?

Apollo Lunar Landing, 45 years ago this week 

     Fred Weldon     14 Jul 2014        view pdf

Personal experiences in support of the lunar Apollo Missions from the Madrid Spain Tracking Stations.  The Madrid Tracking station was one of the three lunar mission tracking stations and was the active tracking station when Neil Armstrong stepped onto the lunar surface.

Entanglement and Other Quantum Weirdness

     Bob Miller    23 Jun 2014

Quantum mechanics is a highly successful theory that nonetheless contains many strange, non-intuitive, and difficult to imagine aspects that still puzzle the experts. The theory has explained the physical nature of chemistry. It provides the understanding of semiconductor devices that are the basis of the growth of digital electronics. It has explained many phenomena in atomic theory and particle physics. Besides entanglement, we will look at the wave-particle duality, uncertainty, the exclusion principle, tunneling and the elusive meaning of the wave function.

A Virtualized Artificial Pancreas System for Type 2 Diabetes

     Michael Albisser    9 Jun 2014

Type 2 diabetes is 20 times more prevalent than Type 1 and leads to diabetes-related complications sooner. In addition to islet cell transplantation, major initiatives to create an artificial pancreas system for the Type 1 subgroup are in progress. By comparison options are limited for the Type 2 population.Preliminary experience with a novel, virtualized artificial pancreas system for Type 2 suggests that patients referred by their doctors can learn 1) why a goal of optimal diabetes control is important and, 2) how to use this system to help achieve and then maintain this otherwise elusive goal.The presentation will describe the technical and scientific novelties of the artificial pancreas system for Type 2 diabetes and illustrate its efficacy in exemplary cases of advanced diabetes. A Pamphlet will be provided that describes the 3 Support Group Sessions available for the 30,000 with Type 2 diabetes right here in The Villages.

Lascaux Cave Painting Preservation

     Phil Geis   26 May 2014

Lascaux is one of the world's treasures - cave paintings of bison, antelopes and other animals, some huge. In a testament to ancient artistry, the painted animals appear to lunge and gallop in the flickering light of torches as their prehistoric painters must have used. Discovered just after the second world war, human presence and modifications exposed the cave and its paintings to insects, flooding and molds, the last of which most immediately threatens the paintings. Efforts to preserve the cave and its art have been burdened with bad science, big ego and politics both French and with the UN. This discussion will trace the modern history of the cave Lascaux and its paintings, the attempts, many now seen as foolish, to preserve the cave and its art and the current efforts with their technical and political realities.

Nuclear Power Plants

     Glenn Kelly   12 May 2014

I will discuss the different types of nuclear plants making electricity in the U.S. today (PWRs, BWRs, and passive plants), and will talk about some of the safety systems that are used to keep them safe.  We may even get into talking about small modular reactors, which are the new hot area in nuclear reactors.

Apollo Lunar Landings and Our View of the Natural World

     Lee Conrad   28 Apr 2014

How the Space Age has enriched our view of the Natural World

Battery Technology

     Jan Haase   14 Apr 2014

Battery based energy Storage can be an economic game changer, but there are many technology options, all with real limitations and trade-offs. We'll put these in prospective and speculate about future trends.

Things that go Roten in the Night - The Role of Preservatives

    Phil Geis    24 Mar 2014

The Role of Preservatives

Three Dimensional Printers

    Lyn Bruzaud    10 Mar 2014

3D printers.  What they are. How they work. What they can do.  Possible impacts on us.

Fly me to the Moon and other places

     Steve Frangos   24 Feb 2014

Mapping the moon for Apollo (Lunar Orbiter), Films for the Apollo program, and spy plane and satellite photography

Optimal Span

    Ira Glickstein  10 Feb 2014

Optimal Span - The Amazing Intersection of Information Theory, Hierarchy Theory, and Complexity Theory" (AKA "The magical number 7 +/- 2"). It turns out that such diverse-seeming structures as RNA (Biology), Sensory Span of Absolute Judgement (Psychology), Management Span of Control (Human Organization), and Written Language (Literature) ALL have a common Optimal Span in the range of five to nine. Indeed, it appears that ALL competitively-selected structures, such as those that have come about due to Darwinian Evolution and Natural Selection of Genes, follow the dictates of Optimal Span. And this commonality extends to the Scientific and Technological creations of Human Brains.

What's in a Weather Report

    Fred Weldon  27 Jan 2014         view pdf

So How, Exactly, Does My Computer Really Work 

    Mike Mocella  13 Jan 2014

The simple device at the heart of all modern electronic equipment has a name we all know, but a structure and function which are mysteries to most everyone. This presentation will discuss those issues, and how such a simple device can enable all the functionality of all of our electronic tools. Finally, we will consider the unique manufacturing process used to fabricate these devices.