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http://LCTG.toku.us.
Speaker schedule management link (John Rudy)

Lexington Computer and Technology Group

The Lexington Computer and Technology Group (LCTG) is a volunteer, no-cost, not-for-profit, just-for-fun-and-education organization that meets most Wednesdays from 10am to 11:30am to discuss a wide variety of technical issues. (Sometimes we meet at a different time, see this in the schedule below.)  Meetings are open to anyone interested in the topic(s).  The group has an email list (see how to join below) for announcements and discussions.

Click to learn about the group

Click to hide

The LCTG grew out of “The Computer Group” which existed prior to the opening of the Lexington Community Center, which is where we meet now.

Members of the group come from all walks of life, education, and previous experiences.  Talks are presented by members of the group as well as outside experts on a variety topics of interest to the group. There is a schedule for future talks as well as a record of previous talks, below.

Many of the meetings feature an outside expert; others are led by group members. Time is set aside, approximately once a month, for short talks and for members to bring questions or problems to the membership.  If you could present a topic of interest to the group, please contact us.

Members can be active, attending most of the meetings, or contributing to the discussion list, or can merely take advantage of the material being posted regarding our talks. There is no requirement for living in Lexington, and although the group started in the Lexington Senior Center there is no requirement to be a senior. The technical level of the talks varies considerably, making much of the material of interest to those with more modest technical abilities.

As of October 2022, we are back in the Lexington Community Center (LCC) as part of a Hybrid Meeting strategy.  Most meetings are hybrid, meaning they are available to watch in-person in the LCC and also via Zoom.  Most are recorded and posted on YouTube, check below for listings (upcoming and past meeting recordings).
For remote participants, the Zoom connection information is provided in Meeting Announcements.

Speakers may request not to be recorded.  Copyrighted materials and other unrelated portions of the presentation may be omitted from videos. URLs may be substituted and/or added.

If you would like to join a meeting via Zoom, you will need to join the group (see above) to get emails with the meeting connection information.  For security reasons and the possibility the information may change, we do not post this here on this site so write us, or join the group so you'll get meeting notices – it's free and painless.

For further information contact the group coordinators by email at info@LCTG.us. We look forward to have you join us!

Click to see how to join the email lists to get meeting info

Click to hide mailing info

Joining the main LCTG Email List
To receive notices of upcoming meetings and join discussions, send an email to join@LCTG.us and, optionally, include in the body of your email:

  1. Your full name
  2. Town of Residence
  3. Brief self-introduction and your interest in the group
  4. How did you learn about our group?
  5. Optionally, topic(s) of interest you might present or share at a group meeting

This email list is closely monitored to keep discussions on topic and prevent spam.  For off-topic and lengthy discussions, see the Extended Discussions list, below.

To send a message to the list, address your email to: members@LCTG.us and for other info:

Joining the Extended Discussions List
Sometimes members want to have extended or lengthy discussions on a topic or express their opinions.  There is a separate, more open discussion list that you can use, the LCTG-Extended list.
To subscribe to the LCTG-Extended list, send an email to LCTG-Extended-subscribe@toku.us
And then to send a message to the list, send it to: LCTG-Extended@toku.us

2019.07.25 00:09 · Steve Isenberg

Upcoming Meetings

Return to main LCTG page
Presenting to the group with Zoomnot ready for prime time: [using ppt impress etc to present|Tips for using MS Powerpoint and LibreOffice Impress in your presentation]
This schedule last modified 2026.04.16 09:38

recents

Click to show recently produced recordings

Click to hide these recent recordings

::RECENT AND UPCOMING MEETINGS::

DateSubject & DescriptionConfirmedContact
Apr 1, 2026Microplastics - As of 3/25, we're not certain what we'll present. Possibilities:
* (a) (16.5m) Why the microplastics crisis will only get worse. 16.5m, 375K views, 11mo ago, 7.4K+
* (b) (5m) The Health risks of plastics: what are microplastics. 5m, 4.8K views, 2yr ago, 134+
* (c ) (2m) Best way to detox microplastics - and it's shockingly simple, Dr Willaim Li. Recap only, 359K views, 5mo ago, 22K+ It's a lot of talk. This link starts at the Recap which is worthwhile IMHO.
* (d) (1h5m) Microplastics, Public Health Myth or Menace - Ian Muway of Gresham College. 1h5m, 27K views, 2yrs ago, 825+
* (e) (23.5m) Microplastics are more dangerous than you think. 23.5m, 155K views, 1yr ago, 8.2K+
* (f) (1h7m) Microplastic Pollution: The big problem with tiny plastic, everyday environment. 1h7m, 1yr ago, 34+
* (g) (1h37m) The effects of microplastics on your health. 1h37m, 1yr ago, 7.6K+
Slides
Apr 8, 2026Buying a new pc (BobP) April 8 Meeting Summary . Slides . Watch Buying New PC presentation
Apr 15, 2026Buying a Refurbished Computer: Powerful Machines - Pleasing Prices (Steve) Refurb Slides video on buying refurbished (not shown) , Watch Buying Refurbished Computer Presentation
Interesting Tools and Utilities (Drew) Tools/Utils slides . Watch Windows Tools presentation part 1
April 15 Meeting Summary . Chat messages
N e x t . M e e t i n g
Apr 22, 2026Nobel prize talk: Physics (Machine Learning) Dick
.
Apr 29, 2026Plastic Pollution: Health, Climate, & Solutions (Eileen Ryan)
Eileen Ryan is the leader of Beyond Plastics Greater Boston and a trained public speaker on plastic pollution with the Beyond Plastics Speakers Bureau.  She is also on the steering committee of Plastic Free Mass.  In addition to her work educating people about the perils of plastics she uses her creative talents to make costumes and art as a climate and social justice activist.  Eileen lives in Watertown and is the mother of three grown children and a grandmother of two.
May 6, 2026Your Own Wiki? What's a Wiki? What can it do for you? How can you use it? How does LCTG's Wiki work? How can I have my own Wiki? (on the cheap!) (Steve)
Tools/Utilities Part 2 (Drew)
May 13, 2026Potpourri
How to encrypt your email inbox (30m)
Squash and Sailing
Drew, Bob M
May 20, 2026Mac utilities, tricks, and tips Harry, Steve, others?
May 27, 2026(1h21) Putting the “Bang” in the Big Bang (1h47 w/q&a) Alan Guth (John Rudy)
June 3, 2026GASP planning session
June 10,2026Nobel prize talk: Proteins Dick
June 17, 2026Potpourri
Meteorology: Weather or Not.
Adam B
June 24,2026Programming with an AI Assistant Harry
July 1,2026Small Modular [Nuclear] Reactors - Update Jerry & David Duff
July 8,2026Curated videos on current state of nuclear fusion Peter
July 15,2026Potpourri
July 22,2026
July 29,2026
Aug 5, 2026
Aug 12, 2026
Aug 19, 2026
Aug 26, 2026
Sep 2, 2026
Sep 9, 2026
Sep 16, 2026
Sep 23, 2026
Sep 30, 2026
Oct 7, 2026
Oct 14, 2026
Oct 21, 2026
Oct 28, 2026


click to show recent meetings

Click to hide recent meetings


::RECENT MEETINGS::

Aug 6, 2025Potpourri
(31m) Solving Wordle using information theory . chat messages. Meeting Summary
(1h8m+30m Q&A) new results from the Event Horizon Telescope (EHT), from the team that brought us the first-ever image of a black hole, from 5/16/2022 watch the presentation
Aug 13, 2025Volcanic activity studies Meeting Summary . watch the presentation
Aug 20, 2025Hearing Aid Appliances for Dummies (What options are there to help you improve your hearing? How do you choose a Hearing Aid (HA)? Tricks and tips, things to look for in a HA and what to watch out for. Can you buy a useful HA without a prescription?) George's slides . Charlie's Slides . Meeting Summary . chat messages . watch the presentation
Pertinent videos
Phonak Audeo Sphere (28m)
Jabra 30 (13m)
Best Costco Hearing Aids 2025 (58m)
Non-Costco provider, onlinehearing.com
Aug 27, 2025Using AI Tools and Techniques to Explore Molecular Biology Findings by Monod
Covering: Monod's contributions to molecular biology and Demonstrating AI tools and techniques
Using the AI Group's Chance and Necessity Portal for this talk. Meeting Summary
Sep 3, 2025Robots in Everyday Life
Meeting Summary . chat messages
Sep 10, 2025AI and Copyright Law, and CRISPR update
Meeting Summary . chat messages watch the presentation
Sep 17, 2025GASP Planning session
Sep 24, 2025Pay no attention to the man behind the curtain: We will pay attention to the tech behind the curtain.
(RH day2)

- The Tech Behind Cruise Control, Crash Prevention and Lane Detection link
- How Wireless Charging Is Advancing to Make Power Cords Obsolete link
- How shazam Makes Unique Audio Fingerprints to Identify Songs link
- How Noise-Canceling Headphones Remove Background Sound link
- The Tech Behind How Concert LED Light Wristbands Work link
- The Tech That Powers Tap-to-Pay link
Oct 1, 2025(YK eve) Windows Power Toys Meeting Summary slides
Oct 8, 2025Susan Liebman, PhD, Protect Your Family with Genetic Testing and The Dressmaker's Mirror Meeting Summary watch the presentation
Oct 15, 2025Potpourri
Federal Science Priority Update (George)
Why is there no methylene in methylene blue? (Jerry) Meeting Summary . chat messages Watch the Federal Science Priority Update presentation Watch the Methylene Blue Mystery presentation
Oct 22, 2025Edwin Land Mr. Polaroid
Oct 29, 2025Drew on image backups, recovery to virtual machines, and temporarily pausing your Windows updates (caveat emptor)
and other topics of note chat messages . Meeting Summary . watch the presentation
Nov 5, 2025LCTG AI Research Group
Turing's paper “Computing Machinery and Intelligence” with a live discussion with “Alan Turing” slides
Meeting Summary . watch the presentation . visualization of the presentation
Nov 12, 2025Potpourri
* The installation of the vacuum vessel where the ions will collide and produce energy
* How Google Translate Uses Math to Understand 134 Languages
* How Google Remapped the World
* Large Language Models Explained
* The world depends on a collection of strange items; they're not cheap.
chat messages
Nov 19, 2025Open Source and Creative Commons Licensing (also copyright, copyleft (sic), public domain, and more!) Meeting Summary watch the presentation notes . slides
Nov 26, 2025Thanksgiving eve - Happy Thanksgiving! - no meeting
Dec 3, 2025High School Chatbot Project (Wei Ding) Meeting Summary slides watch the presentation
Dec 10, 2025What are Wifi 6, 6E, and 7? What's new/improved? What do you get? Meeting Summary . watch the presentation slides
Dec 11, 2025 Th2pm: Rump session, the impact of AI on cognitive Skills (John Day). See link for info and the link to this online meeting.
Dec 17, 2025GASP Planning session
Dec 24 & 31, 2025no meetings
Jan 7, 2026Potpourri
* Email encryption: what is it, why you need it, how to use it, free and paid choices (Drew) watch the email encryption presentation
* A new use for your old smart phone (other than as a paperweight) (Steve)
Meeting Summary
Jan 14, 2026LHS Seniors share the process of making their AI Chatbot (Jerry Xu)
Meeting Summary watch the presentation
Jan 21, 2026Brian Green interviews Kip Thorne, part 1 the 2hr+ interview
Brian Greene is a theoretical physicist and bestselling author known for making complex physics accessible to the public through books like The Elegant Universe and his work as co-founder of the World Science Festival, where he regularly hosts conversations with leading scientists.
Kip Thorne is a Nobel Prize-winning theoretical physicist whose groundbreaking work on gravitational waves led to the detection of these ripples in spacetime by LIGO in 2015, and who also served as scientific consultant and executive producer for the film Interstellar.

Jan 21 Meeting Summary
Jan 28, 2026Brian Greene interviews Kip Thorne, part 2 Jan 28 Meeting Summary
Feb 4, 2026IoT and your home wi-fi network; networking fundamentals part 1 Chat messages . Feb 4 Meeting Summary . watch the presentation
Feb 11, 2026Space Update slides . Feb 11 Meeting Summary . watch the presentation
Feb 18, 2026Entering the Genomic Medicine Era: How technology, data, and biology can improve healthcare throughout our lives. (From November 2025) link to video
Feb 25, 2026Potpourri
Jerry S: Presentation technologies watch Jerry's presentation
Seth S: Networking Fundamentals (continued) – VLANS watch Seth's VLANs presentation . Feb 25 Meeting Summary
Mar 4, 2026 Selected videos.
* ​Artificial Intelligence: New Patterns of Adoption and New Levels of Disruption
* (37m) Amelia Earhart- what happened?
March 4 Meeting Summary
Mar 11, 2026GASP Planning session
Mar 18, 2026Charly's, Tony's and George's Hearing Aids 2026 update
George showed this really good video: https://www.youtube.com/watch?v=_XKsL8u5h54 and recommended this longer one dealing with Costco's 2026 offerings: https://www.youtube.com/watch?v=vMSZqC_D4Cs
George's slides . Charly's slides . Tony's slides . March 18 Meeting Summary . watch the presentation
Mar 25, 2026Tesla self-driving vehicle technology
Waymo Co-CEO talks about the history of autonomous vehicle technology (from May 2025)
Guy drives Tesla in Boston and shows off how the car handles various situations. 1 year ago, FSD 12.5.2.
Chat messages . March 25 Meeting Summary

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2026.02.11 19:13

Past Meetings

2020

DateTopic and links
Jan 8, 2020 Ig Nobel 2019 Awards awards for dubious inventions (Peter Albin) link to Improbable Research page watch the presentation
Jan 15, 2020[1] How we accomplished the change from Yahoo Groups and using the new system (30min, Steve Isenberg) Slides
[2] Windows Security Settings and Windows 7 Anti-Malware (30min, Gary Patrick) Slides
[3] Alternatives to TV servers: new ways of getting programming (30min, Steve Isenberg) Slides . 2010 NY Times article . Spreadsheet shows service vs content
[1] Watch the presentation
[2] Watch the presentation
[3] Watch the presentation
Jan 22, 2020Tesla-Marconi conflict their radio-related patent war from 1900-1943 (Bob Primak) Presentation notesWatch the presentation
Jan 29, 2020Potpourri Ken Cutter spoke on UFO's slideset and the history behind speed of light measurements slideset.
John Rudy showed a video from Broad Institute (pronounced, bro-awd): Overall view of Broad Institute and the presentation we watched, human genome revolution past, present, and future.
John Rudy mentioned that there are some MOOC classes on introduction to biology, see info at this edx link (MOOC=Massive Open Online Course)
Feb 5, 2020Career Day Attendees discuss interesting things from their career. Watch the discussion
Feb 12, 2020Space Update (George Gamota)
Feb 19, 2020Who’s Afraid of the Big Bad AI This is a later presentation, and therefore improved over an earlier presentation.
(John Rudy will coordinate.)
watch the video
Feb 26, 2020Patents – What they are, a brief history of patents, how to read them, and how to obtain them watch the presentation
Mar 4, 2020Patent Licensing from Universities (Lita Nelson) watch the presentation
Mar 11, 2020Geodesy, its properties and tools, presented by Mike Pearlman of the Harvard-Smithsonian Center for Astrophysics Program on Geodesy
Geodesy is the science of accurately measuring and understanding three fundamental properties of the Earth: its geometric shape, its orientation in space, and its gravity field— as well as the changes of these properties with time.
Space Geodesy uses sources external to the Earth: artificial satellites (in satellite geodesy), quasars (in very-long-baseline interferometry, VLBI), and the retroreflectors on the Moon (in lunar laser ranging) to measure these static and time varying properties.
Of current interest are measurements to monitor geodetic parameters and their temporal variations in a global reference frame with a target relative accuracy of 10E-9 – 10E-10, for both scientific understanding of the Earth system and understanding their potential impact on society
Fundamental to these measurements is a reference frame that provides stability over space, time, and evolving technology.
watch the presentation
Mar 18, 2020Tracking New Diseases: Medical issues incl Vaping (Jerry Slate) watch the presentation
Mar 25, 2020Patents for high technology (and when not to have them) (Dick Wagner) watch the presentation
Apr 1, 20203D Printing and Robotics in Industry: An Update (George Burnell) 3D Printers fighting Coronavirus (link from PeterA)watch the presentation
chat messages
Apr 8, 2020Christine Muir, Community Librarian at Cary Library, will demonstrate how to access all the online resources offered by the library. There is no fee for any of these resources, which include ebooks, digital audiobooks, movies, music, TV shows, newspapers, and more. watch the presentation
Apr 15, 2020Futurism We started with something different (Cute Brother and Sister); and then
a couple of videos by/with Amy Webb (a quantitative futurist, professor of strategic foresight at the NYU Stern School of Business and founder of the Future Today Institute)
Ted Talk on hacking online dating (17 mins)
presenting the 2019 Emerging Tech Trends Report (60 minutes) at SXSW in March 2019
relevant links for your offline reference include https://amywebb.io/
There were several links shown during the videos: http://bit.ly/FTI2019TechTrends (this links to the 2020 report), http://bit.ly/SXSW2019TechTrends, and the “TWiT” program we watched at the end http://twit.tv/subscribe (and there's lots to subscribe to!!) and http://twit.tv/live
Apr 22, 2020Potpourri Gary Patrick with information on Encryption and some Utilities.
Charly Sestokas with computer buying tips, etc; HD vs SSD; SD Longevity; MS Surface;
plus Potential House Fires from Phone, Tablet, Laptop, other Electronic Charging setups
watch the presentation
the presentation with captions
slides
chat messages
Apr 29, 2020The Science behind Columbus (Bob Melanson)
Bob finishes this up on July 15
watch the presentation
slides
May 6, 2020The Manhattan Project first part (Charles Holbrow)watch the presentation
May 13, 2020Nuclear Power Generation (David Kahan)slides
watch the presentation
May 20, 2020Boost-Phase Defense against ICBMs presented by Dan Kleppner.
Because little was known publicly about the Bush proposal, the American Physical Society initiated a study. Our presenter was co-chair of the study group.  Although the study is fifteen years old, little has changed.
slides
watch the presentation
May 27, 2020George Burnell Part II
Continuation/conclusion of George Burnell's earlier presentation on 3D printing
watch the presentation
June 3, 2020The Manhattan Project - part 2 (Charles Holbrow)watch the presentation
June 10, 2020Potpourii NY Times article dealing with privacy (Peter Albin)
Phone tracking of people (Charlie Holbrow)
The Immortal (BBC program)
(not recorded)
June 17, 2020Sabermetrics The Statistical Analysis of Baseball (Andy Andres)
Andy Andres is a senior lecturer of natural science at the Boston University College of General Studies who is an expert in exercise physiology, nutritional biochemistry and baseball. In addition to the work listed above, Andres writes, lectures, and speaks to the media about the effects of steroids on baseball players, and he teaches a course at Tufts University in sabermetrics, the data-driven analysis of baseball performance. These pursuits allow the lifelong Red Sox fan and athlete to synthesize his twin loves: baseball and scientific inquiry. Andres is also an MLB datacaster at Fenway Park, a Data Analyst for BaseballHQ.com and Head Coach/Lead instructor for the MIT Science of Baseball Program. In the spring of 2014, Andres will teach a MOOC (Massive Open Online Course) titled “Sabermetrics 101: Introduction to Baseball Analytics” on the edX platform.
SABR: Society of American Baseball Research
watch the presentation
June 24, 2020MOOC Massive Open Online Courses – What's there, what's new. (John Rudy, Charlie Holbrow)
Broken into three presentations: John's talk on available MOOCs, Charlie's talk on MOOCs, and Q&A discussion.
Slidesets to the right.
slides/rudy
slides/holbrow
July 1, 2020Variety Special with Bob Primak and John Rudy on SUMo updater, other topics presented by Steve Isenberg including: Getting loads of music files legally for free after inexpensive application purchase; Video on Deepfakes (how it's done), and a video on Virus Mobility (a haha). Here are links to what we presented and displayed:
Updater apps: SUMo Application Updater (Win) [SUMo Details] Ninite Windows Application Updater
Download/convert apps: Any Video Converter - Downloads YouTube vids and converts formats (Win, Mac) 4K Video Downloader
Listen/Watch/Record apps: RadioTracker - download music from Internet (Win) Audials, extension of RadioTracker, music and video download and more (Win)
Videos played: How Deepfakes Work A Virus Walks into a Bar
SUMo slides
(not recorded)
July 8, 2020Update on the Internet of Things in the Age of Coronavirus (Bob Primak)
Slides References 5G Networks 5G Spectrum Bands
[presentation]
July 15, 2020Potpourri
last part of Bob Melanson's Columbus presentation started on 4/29
Q&A from Bob Primak's talk last week, 7/8
Onboard automotive diagnostics (Bill Quinn)
[presentation]

video wording prep

Wording to be used in videos when posted to YouTube.  If listed here, they're not on YouTube yet.

6/24 (Science & Technology)

MOOCs – Massive Open Online Courses
John Rudy, Retired Software Director

2019

DateLink to Video(s)Slides/notes
Dec 25, 2019Christmas - no meeting
Your homework is to celebrate the good things in life.
Dec 18, 2019Potpourri John Rudy continues AI in Medicine; Steve Isenberg on Cloud File Storage Options
Dec 11, 2019 AI in Medicine MIT Alum Newsletter AI in Medical Care
Dec 4, 2019 Tech trends and holiday gift ideas (Peter Albin and Bob Primak) Watch the presentation Slides
Nov 27, 2019 Happy Thanksgiving! No meeting.
Nov 20, 2019 Dark Web. “The legitimate uses of TOR, which is the software on which the so-called Dark Web runs.
Or, if more interesting, a tour of the Dark Web” https://darkwebtours.weebly.com/ Watch the presentation
Nov 13, 2019 Steering committee
Nov 6, 2019 Backup Strategies (Peter Albin) Watch the presentationSlides
Oct 30, 2019 Space colonies in Solar Orbit
The book describing our design study is available at:
http://large.stanford.edu/courses/2016/ph240/martelaro2/docs/nasa-sp-413.pdf
Watch the Presentation
Charlie's handout
Oct 23, 2019 Tesla vs Edison (Bob Primak) Watch the presentation Bob's paper
Oct 16, 2019 Potpourri:
Flying Saucers – from material written by George Adamski;
Deep Fakes video;
Windows 10 tips (askwoody.com, you may need to become a member with voluntary paid membership; Backing up your device drivers; Getting those old games back into Win10, like FreeCell, Hearts, Solitaire, Chess, Minesweeper; discussion on when to and not to update to “the latest” Win10 release (consider: consult askwoody.com which today advises NOT to patch MS patches.) Gary's slides
Oct 9, 2019 Yom Kippur, no meeting
Oct 2, 2019 Science/Technology Rivalries: Newton vs. Liebnitz vs. Hooke (Charlie Holbrow) Watch the presentation (note: video is missing for part of the presentation) handout
Sept 25, 2019 Application of physics techniques to biology. Gene Surfing and Survival of the Luckiest, David Nelson, Professor of Physics, Harvard (friend of Harry Forsdick). Population waves have played a crucial role in evolutionary history, as in the “out of Africa” hypothesis for human ancestry. Population geneticists and physicists are now developing methods for understanding how mutations, number fluctuations and selective advantages play out in such situations watch the presentation
Sept 18, 2019 Cogito. A few weeks ago Mitch Wolfe sent out two very thought provoking links regarding the new science of voice technology, including what can be gathered by voice analysis using AI. We are fortunate to have Ali Azarbayejani, Cogito's CTO, visit and speak with us about the technology used by this local company which makes software that analyzes phone conversations and provides real-time guidance to help service employees better engage and connect with customers. Watch the presentation
Sept 11, 2019 Jonathan Goode discusses many interesting (and amazing) computer details including fonts
Bob Primak on the Laser Scanning of St Pauls Cathedral and an update on the cleanup of Notre Dame Cathedral
Notes on Bob's talk
High lead levels found in Notre Dame WSJ Article, Reconstruction work is on hold due to lead
Sept 4, 2019 AI for People in a Hurry (short) and Setting Rules for the AI Race, plus a pre and post view discussion. Meeting led by Larry Wittig.
Aug 28, 2019 Dava Sobel’s Google talk on “The Glass Universe”, women in Science (a Google Talk video)
JohnR will introduce the subject and speaker, we'll watch the video, and discuss it and related topics afterwards
see also Constructing the Glass Universe by Dava Sobel. Additional info on and about this topic, by Gary Patrick–includes comments on the video and more.
Aug 21, 2019 “UNIX, Linux - Origins, History, Ongoing Futures”, a talk presented by Charly Sestokas (note, talk will not be recorded)
plus a 30-minute video about SpaceX, presented by George Gamota
Aug 14, 2019 Potpourri.
Eli Brookner finishes his talk on Radar and Einstein
CharlyS on Storage (not recorded).
How to use LexMedia to view videos on demand
Aug 7, 2019 Eli Brookner “Snoopy on Radar & Phased Arrays & Einstein's Duality Theory – An Update.” part 1 (90 min)
July 31, 2019 Eight Days to the Moon and Back - focus on Apollo 11 [George Gamota]
July 24, 2019Breaking the WWII Enigma Machine (Material from the April 2019 Lexington Veteran’s meeting, search LexMedia On Demand for “Enigma”) [Rudy]
July 17, 2019Potpourri including Steve Isenberg on virtual credit cards, space elevators, and more (planningpage) recording of presentation
July 10, 2019Apple Computer, History and Devices, by Josh Turiel see the presentation
July 3, 2019No Meeting due to Holiday
June 26, 2019Update on 5G (Bob Primak) see the presentation
June 19, 2019Black Hole 60-minute video (Gamota) plus
June 12, 2019 From talks at Google Frank Abagnale: “Catch Me If You Can”
and A new way to remove CO2 from the atmosphere (Jennifer Wilcox)
June 5, 20193D Reconstruction. Used for churches and other buildings. (Bob Primak)
May 29, 2019Potpourri including Y2K. What was it, why did it happen, was it real? (John Rudy) and Gary Patrick on Windows Issues
May 22, 2019Potpourri. Showed several movies. Vaccines calling shots
The Ingenious Design of the Aluminum Beverage Can
The strange tale of the Norden bombsight
May 15, 2019Career stories. Come prepared to tell us about your technical experiences.
(We have done this 2-3 times before; but not recently).
https://www.pbs.org/video/nova-vaccinescalling-shots/
May 8, 2019Ray Kurzweil + Disruptive Technologies and Dangerous Ideas Singularity University co-founder, Google AI Director and noted futurist Ray Kurzweil joined Peter H. Diamandis for a 90-minute Ask Me Anything, all aimed at providing you an unfair advantage for your business.https://youtu.be/SaOfLtoaKqw
May 1, 2019Potpourri and Steering Committee
April 24, 2019Documentary on Neil ArmstrongGamota
April 17, 2019History of the World in 100 Objects (continued). We listened to The mechanical galleon, Mexican codex map, Ship's chronometer from HMS Beagle, and Solar powered lamp and chargerBritish Museum site
BBC site
April 10, 2019Madame Curie video about Madame Curie and the Curie family, presented by Charlie Holbrow. Madame Curie and the Curie family will focus on her and her daughter and their characters and discoveries and how they fit into the sequence of dramatic developments in physics between the discovery of radioactivity in 1897 and the discovery of nuclear fission in 1938. This will include some description of Lise Meitner's role in these developments and a brief mention of why she didn't get a Nobel for the discovery of nuclear fission. handout that wasn't handed out How the Curies' piezo device worked and measured small electric current
April 3, 2019Showing the 2014 AI movie Ex Machina: A young programmer is selected to participate
in a ground-breaking experiment in synthetic (artificial) intelligence (AI) by evaluating
the human qualities of a highly advanced humanoid. Very intriguing movie.
FYI, the movie is available on NetFlix.
March 27, 2019Computer History Museum (Mountain View, CA) interview with Frank Heart (who in 1969 led the team of BBN engineers that created the ARPANET).
slightly shortened version
slides
March 20, 2019George Gamota shows video “Journey through the Milky Way”
And relating to the end of the program, info on Detecting Dark Matter
New: Milky Way Bulge
March 13, 2019Password Managers
Slides (with links) for the presentation
Will your password stand up to a cracker?
Is your password or account info out on the web?
Newsletter 4/15/2019 discussing password managers
Related info
About Keeper Password Manager
Keeper website screenshots
March 6, 2019History of the World in 100 items. Presenting a representative sample of the 100-part series of 15 podcasts by Neil MacGregor during his time as Director of the British Museum that explores world history from 2 million years ago to the present. We listened to The Flood Tablet, Hebrew Astrolabe, and Ming Bank Note. British Museum site
BBC site
February 27, 2019George Gamota presents “2018 Space Events/Discoveries” plus 10 minute update on “Trump's Science Appointees”Space Update slides
Trump Science Appointees slides
February 20, 2019Charlie presents the first of 3 talks on quantum physics, today's subject is “why wave-particle duality makes such a disturbing theory necessary”Powerpoint slides
Wave Particle outline -- Why we need quantum mechanics
February 13, 2019Windows System Maintenance and Updating (Bob Primak) part 1PDF of Bob's slides
February 6, 2019The Power Grid (presented by Jackie Zajac)PDF of Jackie's slides
January 30, 20192019 lg Nobel awards ceremony (presenter Peter Albin)
Awards Ceremony Improbable Research home
“Research that makes people LAUGH and then THINK”
January 23, 2019Shown:
TED Talk String theory - Brian Greene
The greatest dance sequence ever
The best stats you've ever seen
The tyranny of the rocket equation
Not shown but of possible interest
TED Talk Why is our universe fine-tuned for life? - Brian Greene
10 Fascinating Examples of Unintended Consequences
January 16, 2019Mathematics of Weight Loss
10 Times Michio Kaku Arguments Blew Our Minds
TED Talk The freakonomics of McDonalds vs Drugs by Steve Levitt
January 9, 2019Michael Rosenblatt, MD on “Ways That Wartime Injuries Have Influenced Civilian Medical Practice”link to slides on Yahoo

2018

Software Maybe of Interest

Neither the Lexington Computer and Technology Group nor the author of this Wiki page guarantee the application(s) listed here.  While we have investigated and tried them ourselves, they come with no guarantee.

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New Email List
LCTG Management Team
LCTG announcement sending process The group meets weekly on Wednesdays, 10am online.  (It has previously met at the Lexington Community Center, 39 Marrett Road, Lexington but has suspended these in-person meetings during the Covid-19 situation.)
LCTG Email List Joining Process

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