[Lex Computer & Tech Group/LCTG] [LCTG Matters] Meeting Reminder: Einstein Rings, presented by Paul L. Schechter. 10AM ET, January 25, 2023. Lexington Computer and Technology Group

[Robert Primak]

 Jonathan -- Harry will not be here on Feb. 1st. The announcement for that date needs to be revised. 
So far, I have not heard from anyone about helping me out with a review of cryptocurrency and blockchain basics. So I guess I'll be on my own. I still need to dig up some slides from other talks I've given on those aspects. (Don't worry -- I have them, just need to dig them out and select a brief overview.) 
-- Bob Primak 

    On Sunday, January 22, 2023 at 12:19:25 PM EST, Jonathan Goode via Lctg-others <lctg-others at lists.toku.us> wrote:  
 
 
 (NOTE:Initial Reminder.)

 

This meeting will be available inthe Lexington Community Center. Youmay attend in person (our usual room 237) or via Zoom.

 

Our Zoom Meeting ID is 972 61460830. Detailed instructions for joining us on Zoom are at the end of thismessage.

 

|  
January 25, 2023
  |  
Einstein Rings: Gravitational lensing occurs when enormous masses like giant black holes or clusters of galaxies warp and deflect light coming from behind them. “Point” sources appear as arcs. When the source and deflector are properly aligned, the arc can be a closed circle – an Einstein Ring. The Sun's deflection of starlight is a small scale example of what becomes large scale when clusters of galaxies are the deflecting matter. Presented by Paul L. Schechter, an MIT emeritus professor of astrophysics.
  |


Below are our plans for Upcoming Meetings. Formore schedule information, please refer to https://wiki.toku.us/doku.php?id=lctg_speaker_schedule 

|  
February 1, 2023
  |  
Potpourri
 Crypto Crashes and Crypto Culture (Bob Primak) and Harry? (SNL video?)
  |
|  
February 8, 2023
  |  
Space Update, presented by George Gamota. James Webb results could affect this presentation.
  |


SPECIALNOTE  - Links to many of our previous sessions are available online at http://lctg.toku.us/, thanks tothe diligence of Steve Isenberg. This includes our sessions
   
   - Bitcoin, Web3 and NFTs https://youtu.be/QWOGF4PeEGY
   - The Prodigy of High Precision Measurements  https://youtu.be/_2CXrNOB7HY
   - Solar Panels and Energy Storage https://youtu.be/jh-ieBGwB4E
   - Internet fast lanes, stock trading, net neutrality https://youtu.be/qzm3QI-wyPg
   - Scientific CCD Development at MIT Lincoln Laboratory https://youtu.be/yisqIghJptg
   - Basics of Fusion https://www.youtube.com/watch?v=kgn7JYERNN4
   - Fusion Part II  https://www.youtube.com/watch? v=akmg2mQ5Gik
   - Notetaking software https://www.youtube.com/watch?v=yLAQKl7Kw2M
   - Quantum Basics, part III https://youtu.be/7l8vqoN4Na4
   - Ukraine: The Real Truth https://youtu.be/SD2XdUhzTaQ
   - Weather Models https://youtu.be/liTvQbtNnA0 
   - Windows 11 https://youtu.be/NhlDobQ9eGY
   - Generating Oxygen on Mars https://youtu.be/56-xpi3hEvc
   - Facial Recognition https://youtu.be/6eupcUxqggU
   - Voyager Spacecraft Update, Lessons Learned https://youtu.be/ox2wl0E_PH8
   - Cognition, Affect, and Learning: The Role of Emotions in Learning https://youtu.be/sf2JL3zwrmg

 

If this email wasn'taddressed to you and you would like to join the group, or if you have a friendor colleague who might also be interested in joining, it's easy.  Ask themto go to the group's wiki page at http://LCTG.toku.us and follow the simpleinstructions under "Join the Email List".  By being a member ofthe group you'll get reminders of upcoming meetings and infrequent relatedmessages. No advertising.  The list is tightly managed.

Membership is free and given that all meetingsare available on Zoom you only need to be connected to the Internet to join. It'sok to join from anywhere you can get a decent Internet connection.
   
   - We, the Lexington Computer and Technology Group, will meet Wednesday at the usual 10AM Eastern Time, in person at the Lexington Community Center and online, using the Zoom Video Conferencing Application, facilitated by Steve Isenberg. 

There is an instructionpage at https://toku.us/zoomishbut note that the URL and phone number shown are examples.

 

To join our online meeting,sometime after 9:45 AM on Wednesday, choose one of the following options:
   
   - If you have the Zoom application installed, start it and join meeting with ID 972 6146 0830
   - From your browser, go to: https://zoom.us/j/97261460830
   - From your smartphone, tap this: +16468769923,,97261460830
   - From a “dumb” telephone, call 1 646 876 9923 and enter meeting ID: 972 6146 0830 
   
   - Once the connection is established, you may need to locate and use the on-screen controls that turn on the sound and the video. You should be able to see and hear others and they should be able to see and hear you, if you have a camera and microphone (each of which you can unmute selectively).
-- 
Lctg-others mailing list
Lctg-others at lists.toku.us
http://lists.toku.us/listinfo.cgi/lctg-others-toku.us
  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.toku.us/pipermail/lctg-toku.us/attachments/20230122/b3d45108/attachment.htm>