True Images Wiki

A collection of information Steve finds useful

User Tools

Site Tools


Upcoming Meetings

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 2021.02.26 11:00

Upcoming 2021 Schedule

click to show upcoming meetings

Click to hide upcoming meetings

Mar 3, 2021Potpourri
(Harry) Getting Streaming Programming Into Your TV (what to do when your TV just isn't smart enough)
Fix-It Shops, Dan Kleppner et al
Cryptocurrency and the IRS: What No One Knew About Taxes 24min
GeorgeB continuing on Rubber: industrial products, recycling, synthetic, and more.

Another Mark Rober video, perhaps? Or a surprise video? Come see.

? 3-year effort to video two vortex rings colliding in super slow motion. 8min (Bill Haley)
? Other Mark Rober youtube videos (he did Squirrel vid)
(Or, finish earlier topics not completed)and more?
Mar 10, 2021Chris Barnett, theory of recycling (GeorgeB to followup)
Chris Barnett, VP waste mgmt
NOT YETGeorgeB to confirm date with Barnett
Mar 17, 2021Why is Venus so bloody hot? The greenhouse effect. (Charlie Holbrow)yes
Mar 24, 2021I. I. Robi, a story of scientific rags-to-riches (Dan Kleppner)yesDan K to supply summary
Mar 31, 2021Flying Cars presented by Bill Passman. An overview of what is currently called “Flying Cars”, which includes Terrafugia's “roadable aircraft”, designed to drive from home to an airport and then fly like a General Aviation Light-Sport Aircraft (LSA). Other flying car efforts are aimed at VTOL air taxi fleets, personal VTOL vehicles, electric airplanes and autonomous cargo-VTOLs.
Technologies being used are folding wings, tilt-wings, tilt-rotors, tail-sitters, and power sources using battery electric drive, hybrid-electric drive, hydrogen, and fuel-cell power.
Bill will also present market hurdles, such as: battery technology, charging infrastructure, safety, heliport infrastructure, noise reduction, and FAA regulatory capabilities.
Apr 7, 2021Telephone Switching Before Computers (Ken Pogran)yes
Apr 14, 2021The Apollo Mission Presented by Fred Martin, ScD.; Dr. Martin served as the Apollo Software Project Manager while at the MIT Instrumentation Laboratory (now Draper Lab) and then pursued an industrial career in software analysis and management.
History will surely record the voyage to the moon as being the greatest adventure of the 20th century. We will first examine our fascination with our closest neighbor and early speculation of travel through the writings of Jules Verne. We will discuss the principles of how a rocket works, gain an understanding of JFK’s decision and confidence to place a man on the Moon, and experience the Apollo Moon Project “first hand:” its methods, triumphs and surprises. Our resources will include Dr. Martin’s experiences within the Apollo Program and videos of the exciting minute-by-minute landing on the Moon’s surface.
Apr 21, 2021Andrea Ghez; won Nobel Physics for black holes, Brian Green video has interview with her. JohnR has videos with Ghez (and will investigate applicability for LCTG) This is an excellent description by Andrea Ghez (2020 Nobel Prize winner in Physics). It is 50 minutes long and is an excellent example of women in science. I think it is better than her interview with Brian Greene. It was given at the World Science Festival which is run by Greene
Apr 28, 2021Potpourri
May 5, 2021Space Debris: A Big Problem (Georg Kirchner) When the first satellites were launched some 60 years ago, space was more or less empty. However, the ever increasing launching activities since that now have created a rather crowded environment above our heads: More than 30.000 space debris objects – old / defunct satellites, upper stages of rockets, remaining parts after explosions of collisions etc. – are now orbiting in different altitudes, tracked by radar, laser and passive optical telescopes. The possibility of collisions is already rather high: Collision warning systems create already more than 1000 warnings per day (!) of close encounters between 2 objects – and sometimes this is TOO close – and a collision between two space debris objects, at velocities of 27.000 km/h, creates several 1000 new space debris parts…
Satellite Laser Ranging (SLR) has demonstrated during the last years the capability of tracking such debris objects, helping to determine their accurate orbit, and also their tumbling motions – important features if you want to catch an old upper stage, and remove it from space.

Dr. Georg Kirchner is a group leader at the Space Research Institute, Department of Satellite Geodesy, Austrian Academy of Sciences in Graz, Austria.
May 12, 2021Ivor Morgan is willing to talk about his career in Antarctica, he has photos. It started with him being assigned to a radar station in UK after WWII, then to Antarctica for 2 years. [George Gamota]
May 19, 2021Potpourri
May 26, 2021Lex Liby presentation on security by Bruce Schneier
June 2, 2021Eli Brookner would like to present to the group “Fun Family Talk on Contributions of Radar to Winning WWII”. Abstract from Eli:
Radar was in its infancy at the start of World War II. The British were using radar effectively along their coastline with a network of antennas on very tall towers to warn of approaching German aircraft, but they needed an invention that would allow radars to be small enough to fit on ships and aircraft. They came up with the cavity magnetron. However they looked to American manufacturing know-how and resources to mass produce this device in a hurry. After turndowns by all the major US firms, a small Boston newcomer, Raytheon Company, came up with a solution and ended up making 85% of all magnetrons used by the allies in the war, and changed the course of the war.
June 9, 2021
June 16, 2021
June 23, 2021
June 30, 2021
  • Orphaned (moved from 12/9/2020)
    Computational Photography - changing what's used as a camera. link e.g., replacing DSLR with cellphones; more (Jonathan Goode?, Harry Forsdick?) (needs a lead)
  • Orphaned (moved from 11/11/2020)
    How one builds a web application (e.g., using spreadsheets) (Harry Forsdick)
  • Orphaned Best of Freakonomics an interview with Steven Levitt and Stephen Dubner, moderated by Faith Salie. Recorded at the 92nd Street Y on May 2015. (Peter Albin has link to 70min video)
lctg_speaker_schedule.txt · Last modified: 2021.02.26 11:00 by smismi7