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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 LCTG@toku.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 LCTG-subscribe@toku.us and 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: LCTG@lists.toku.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 2025.06.27 17:01

recents

::RECENT AND UPCOMING MEETINGS::

DateTopicconfirmedFollowups
June 4, 2025Selected Nobel Prizes in Medicine chat messages Meeting Summary watch the presentation; captions available
June 11, 2025Comparison of the most popular AI engines. Which is best for this or that. chat messages Meeting Summary watch the Beyond Generative presentation Beyond Generative slides
June 18, 2025GASP Planning session Meeting summary
June 25, 2025Fusion Update Meeting Summary watch the presentation
N e x t .  M e e t i n g
July 2, 2025Potpourri
Oliver Marsh: Crack growth and iceberg formation on a dynamic ice shelf. (Oliver is a glaciologist with the British Antarctic Survey) Abstract: Ice shelves around Antarctica are critical to slowing the rate of sea level rise.  This talk addresses new technology used to monitor cracks in ice shelves during polar winter, including GNSS precise point positioning, and ground-based and satellite radar systems.  Three major iceberg calving events have occurred on the Brunt Ice Shelf since 2021, with new high-precision data used to inform models of fracture propagation and ice shelf stability. (~45minutes)
Methylene Blue (JerryS)
AI Followup (DickW)
.
July 9, 2025History of Space Travel: Venus and Mars (video) George
July 16, 2025Drones. The background of drones and the technology behind them; Using drones in photography and examples of images. Al Levin
July 23, 2025(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 TedK
July 30, 2025(59m) A Hackers Mind: How the Powerful Bend Society's Rules and How to Bend Them Back (Bruce Schneier) a Harvard Science Book Talk Series Lecture
(31m) Solving Wordle using information theory
Aug 6, 2025Potpourri
Ground Based Deep Space Telescope accomplishments (?)
Aug 13, 2025Volcanic activity studies Ted
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, Charlie
Aug 27, 2025What are some interesting uses of AI other than Chats Harry
Sep 3, 2025Robots in Everyday Life (working title) JohnR
Sep 10, 2025IP Update: Copyright for AI-developed Material and CRISPR Patent Dick
Sep 17, 2025GASP Planning session
Sep 24, 2025Shooting Down Drones: Raytheon's approach to attacking drones (Will Straus) (tentative) (RH day2) JohnR
Oct 1, 2025(YK eve)Altruism, Philanthropy, and Philandering in Science Ted
Oct 8, 2025Susan Liebman and The Dressmaker's Mirror yes
Oct 15, 2025Potpourri
Federal Science Priority Update (George)
Oct 22, 2025Edwin Land Mr. Polaroid (smi/m)
Oct 29, 2025
Nov 5, 2025LCTG AI Research Group John Day
Nov 12, 2025Potpourri
Nov 19, 2025
Nov 26, 2025Thanksgiving eve
Dec 3, 2025
Dec 10, 2025
Dec 17, 2025Potpourri
Dec 24, 2025'twas the night before Christmas
Dec 31, 2025New Year's Eve
Jan 7, 2026
Jan 14, 2026Potpourri
Jan 21, 2026
Jan 28, 2026


click to show recent meetings

Click to hide recent meetings


::RECENT MEETINGS::

January 8, 2025Dick Wagner on Sociobiology
Talk based on Sociobiology (The New Synthesis) by Edward O. Wilson © 1975 watch the presentation . chat messages . Meeting Summary . slides
January 15, 2025Potpourri
Continuation of Sociobiology slides . watch the presentation
Elon Musk's optimistic views of the future . Meeting Summary
January 22, 2025Practical Fusion Power Update and Challenges: breeding and handling Tritium (TedK)
Meeting Summary . watch the presentation
January 29, 2025Potpourri. Egg Drop from Space (Mark Rober) . How does a computer mouse work? (12m) . Astrophysicist Explains Gravity in 5 Levels of Difficulty
February 5, 2025Sabine Hossenfelder day
Videos we watched: Did DeepSeek burst the AI bubble or will the Stargate Project make it worse?
AI Super Agents are coming. Allegedly. What does this mean? . The Case for String Theory Just Got Stronger
How close is the bird flu to human transmission? Status update. . Is the Universe Infinite or Finite?
What is “gravitic propulsion” and could the US government hide it?
February 12, 2025Modular Nuclear Reactors (MNRs). These are being developed to supplement the production of electricity for the coming energy-hungry data centers. (George W Griffith PhD from Idaho National Laboratory, part of Department of Energy)slides . Paper on status of SMR . Meeting Summary watch the presentation
February 19, 2025 Potpourri, showing: Time travel in fiction (8m) How time travel is possible (9m)
The time travel paradox you never heard of (10m) New office math (1m)
Why can't anything go faster than the speed of light? History of speed of light part II (12m)
The best and worst ways to board a plane (9m) Solving the three-body problem (16m) Large and small views (3m) . chat messages
February 26, 2025Curated interesting video shorts, including Hossenfelder & Veritasium. Videos presented and discussed:
(25m) What if all the world's biggest problems have the same solution? (Vertasium)
(7m) What Everyone Gets Wrong about AI (Hossenfelder)
(35m) The problem with Sabine Hossenfelder
Meeting Summary . chat messages
March 5, 2025GASP planning session
March 12, 2025Brian Greene day. We saw:
Intro slides
Code to Cure: AI and the Future of Health
I Am Not a Robot:2025 Academy Award Winner
March 19, 2025Videos we viewed: 3D Houses 60 Minutes (22m)) 11 Lies about printing houses (15m)
Printing Cheap Clay Houses(4m) Why 3D Printing Buildings Leads to Problems (16m)
How Cement is Made (7.5m) CBS News on printing homes after a disaster (2m)
Other videos on the topic we did not view: Larry Sass TED (19m) How Concrete Homes Are Built with a 3D Printer (6m)
3D Printed Concrete House, Printed in 48 hours (3m) Move In Ready 3D Printed House in Germany (11m)
Inside a 3D Printed House That's Actually (kind of) Affordable (9m)
March 26, 2025Potpourri
Asteroid Risks (John Rudy) slides
Gamota's suggested astronomy videos What's beyond the observable universe? Breakthrough cosmic filament connecting galaxies finally detected plus
Can you fool a self-driving car? (Yes you can fool some.)
chat messages Meeting Summary
April 2, 2025Listen up: Hearing Aids - The Newest Technology Available Now (Gamota).
slides chat messages Meeting Summary watch the presentation
Videos we viewed in the presentation:
Hearing Aid Types and How to choose
Dr. Cliff: How to Decide Which Hearing Aid Technology Level is Right for You
Costco's Best Hearing Aids 2025
After 2 Years of Reviews: My Top 3 OTC Hearing Aids 2024
didn't have time to show:
Use of Gimbels - gyros in Hearing Aids
Hearing Aid Bluetooth LE Audio Explained
Auracast Bluetooth for Hearing aids, everything you need to know explanation
April 9, 2025Electrified mobility and its effect on the town. Popular models, price trends, accessibility benefits, and safety risks. Discuss the adoption of e-bikes and scooters in town over the past couple years and its impact (e.g. proposals for a formal speed limit on the commuter bikeway, debates over the creation of dedicated / mixed use paths when redesigning local roads). (Rich Moffitt suggests)
slides chat messages Meeting Summary
* Why are people talking about “micromobility” now?
* What are e-bike classes (1, 2, 3) and what are the tradeoffs / restrictions?
* What's the risk of battery fires on these things and how can I manage the risks?
* Why are they popular now? (mainly because motor costs have come way down and reliability has gone up, see video of hub motor production: E-Bike Hub Motor Factory Tour in China ELECTRICBIKE.COM )
* Is it feasible to DIY build (sometimes, with considerations)
Rich Moffitt
April 16, 2025The Entire Universe - BBC, History of Universe
Philomena Cunk vs Prof Brian Cox
Ted
April 23, 2025Potpourri, including
Portable Software (Drew)
Protopage, 1TB 1GB/s Thumb drive, BackMarket, CamelCamelCamel.com, UptimeRobot, and Free Movies online no login no fees (SteveI)
chat messages Meeting Summary, with links to mentioned apps
April 30, 2025Lexington's 250 Drone Show: How They Pulled It Off (What goes into producing a fantastic drone show) Meeting Summary Slides: click on slideshow button The paper Watch the presentation
May 7, 2025Heat pumps in Lexington – trends and options, pitfalls to watch out for. (Moffitt) Meeting Summary chat messages watch the presentation
May 14, 2025Space Junk and How To Manage It - EU's Space Claw (Bob) Meeting Notes with video links chat messages Meeting Summary
May 21, 2025(1h18m) Richard Feynman Lecture -- “Los Alamos From Below”
May 28, 2025Potpourri, including:
Space Junk part 2 (~30m)
Extend your display (Drew)
What did China see on the other side of the moon? link chat messages Meeting Summary

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This page has been visited 35 times today, 38 times yesterday, and 2450 total times since 20210323

2023.08.16 11:39

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.

Other items and discussions

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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