Wednesday, July 1, 2020

Astro-Calendar: 2020 July / 50 Years of Video Calling

              
July 1 marks the 50th anniversary of commercial video telephone service. It was on that date in 1970 that service began with 38 PicturePhone sets, leased by eight Pittsburgh corporations, as well as Pittsburgh's news / talk radio station, WJAS. Additionally, two public demonstration, PicturePhone booths were installed in the original Buhl Planetarium and Institute of Popular Science (a.k.a. Buhl Science Center), Pittsburgh's science and technology museum from 1939 to 1991. Although the original PicturePhone service, created by AT&T Bell Labs, was not a commercial success, it led to the video telephone service we enjoy today. The image shows a PicturePhone Mod II, used during the roll-out of the commercial video telephone service.
(Image Source: Wikipedia.org, By Courtesy: LabguysWorld.com, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=8135558)

Astronomical Calendar for 2020 July ---
Link >>> http://buhlplanetarium4.tripod.com/astrocalendar/2020.html#jul

 Related Blog Post ---

"Astro-Calendar: 2020 June / Annual Ham Radio Field Day June 27-28."

Monday, 2020 June 1.

Link >>> https://spacewatchtower.blogspot.com/2020/06/astro-calendar-2020-june.html


Source: Friends of the Zeiss.
              Wednesday, 2020 July 1.

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gaw

Glenn A. Walsh, Informal Science Educator & Communicator:
http://buhlplanetarium2.tripod.com/weblog/spacewatchtower/gaw/ >
Electronic Mail: < gawalsh@planetarium.cc >
Project Director, Friends of the Zeiss: < http://buhlplanetarium.tripod.com/fotz/ >
SpaceWatchtower Editor / Author: < http://spacewatchtower.blogspot.com/ >
Formerly Astronomical Observatory Coordinator & Planetarium Lecturer, original Buhl Planetarium & Institute of Popular Science (a.k.a. Buhl Science Center), Pittsburgh's science & technology museum from 1939 to 1991.
Formerly Trustee, Andrew Carnegie Free Library and Music Hall, Pittsburgh suburb of Carnegie, Pennsylvania.
Author of History Web Sites on the Internet --
* Buhl Planetarium, Pittsburgh:
  < http://www.planetarium.cc >
* Adler Planetarium, Chicago:
  < http://adlerplanetarium.tripod.com >
* Astronomer, Educator, Optician John A. Brashear:
  < http://johnbrashear.tripod.com >
* Andrew Carnegie & Carnegie Libraries:
  < http://www.andrewcarnegie.cc >

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