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

Tue Jan 24 11:47:23 PST 2023

Is this presentation in person?

On Tue, Jan 24, 2023 at 10:56 AM Jonathan Goode <jonathan.goode at gmail.com>
wrote:

>  (NOTE: Repeated Reminder with contents unchanged since yesterday.)
>
>
>
> This meeting will be available in the Lexington Community Center. You may
> attend in person (our usual room 237) or via Zoom.
>
>
>
> Our Zoom Meeting ID is 972 6146 0830. Detailed instructions for joining us
> on Zoom are at the end of this message.
>
>
>
> *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. For more schedule information,
> please refer to https://wiki.toku.us/doku.php?id=lctg_speaker_schedule
> <https://wiki.toku.us/doku.php?id=lctg_speaker_schedule> *
>
> *February 1, 2023*
> Potpourri
> Crypto Crashes and Crypto Culture (Bob Primak) (SNL video?)
>
> *February 8, 2023*
> Space Update, presented by George Gamota. *James Webb results could
> affect this presentation.* *SPECIAL NOTE  -* *Links to many of our
> previous sessions are available online at http://lctg.toku.us/
> <http://lctg.toku.us/>, thanks to the diligence of Steve Isenberg. This
> includes our sessions*
>
>    - *Bitcoin, Web3 and NFTs https://youtu.be/QWOGF4PeEGY
>    <https://youtu.be/QWOGF4PeEGY>*
>    - *The Prodigy of High Precision Measurements*  *https://youtu.be/_2CXrNOB7HY
>    <https://youtu.be/_2CXrNOB7HY>*
>    - *Solar Panels and Energy Storage* *https://youtu.be/jh-ieBGwB4E
>    <https://youtu.be/jh-ieBGwB4E>*
>    - *Internet fast lanes, stock trading, net neutrality* *https://youtu.be/qzm3QI-wyPg
>    <https://youtu.be/qzm3QI-wyPg>*
>    - *Scientific CCD Development at MIT Lincoln Laboratory* *https://youtu.be/yisqIghJptg
>    <https://youtu.be/yisqIghJptg>*
>    - *Basics of Fusion https://www.youtube.com/watch?v=kgn7JYERNN4
>    <https://www.youtube.com/watch?v=kgn7JYERNN4>*
>    - *Fusion Part II  https://www.youtube.com/watch? v=akmg2mQ5Gik
>    <https://www.youtube.com/watch?v=kgn7JYERNN4>*
>    - *Notetaking software https://www.youtube.com/watch?v=yLAQKl7Kw2M
>    <https://www.youtube.com/watch?v=yLAQKl7Kw2M>*
>    - *Quantum Basics, part III https://youtu.be/7l8vqoN4Na4
>    <https://youtu.be/7l8vqoN4Na4>*
>    - *Ukraine: The Real Truth https://youtu.be/SD2XdUhzTaQ
>    <https://youtu.be/SD2XdUhzTaQ>*
>    - *Weather Models https://youtu.be/liTvQbtNnA0
>    <https://youtu.be/liTvQbtNnA0> *
>    - *Windows 11 https://youtu.be/NhlDobQ9eGY
>    <https://youtu.be/NhlDobQ9eGY>*
>    - *Generating Oxygen on Mars https://youtu.be/56-xpi3hEvc
>    <https://youtu.be/56-xpi3hEvc>*
>    - *Facial Recognition **https://youtu.be/6eupcUxqggU
>    <https://youtu.be/6eupcUxqggU>*
>    - *Voyager Spacecraft Update, Lessons Learned **https://youtu.be/ox2wl0E_PH8
>    <https://youtu.be/ox2wl0E_PH8>*
>    - *Cognition, Affect, and Learning: The Role of Emotions in Learning **https://youtu.be/sf2JL3zwrmg
>    <https://youtu.be/sf2JL3zwrmg>*
>
>
>
> If this email wasn't addressed to you and you would like to join the
> group, or if you have a friend or colleague who might also be interested in
> joining, it's easy.  Ask them to go to the group's wiki page at
> http://LCTG.toku.us and follow the simple instructions under "Join the
> Email List".  By being a member of the group you'll get reminders of
> upcoming meetings and infrequent related messages. No advertising.  The
> list is tightly managed.
>
> Membership is free and given that all meetings are available on Zoom you
> only need to be connected to the Internet to join. It's ok 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 instruction page at https://toku.us/zoomish but 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).
>
> ===============================================
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