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Michael Umbricht
112 followers -
Ladd Observatory Curator
Ladd Observatory Curator

112 followers
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Slides from my presentation at Providence Radio Association W1OP about the Rhode Island AREDN mesh network on now online. Metropolitan area wireless networking via amateur radio.

http://thuban.physics.brown.edu/mesh/aredn-ri.pdf
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Can a supercomputer learn to play Atari Pong as well as a 7 year old?

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+Ed S, I just posted to the Retro Computing community using the Retro-Computing Society of RI account. Could you check if it got tagged as spam?

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The Cray Jedi that I've been restoring was used by a Nobel Laureate!
Our Cray was used by a Nobel Laureate!

Congratulations to Prof. Michael Kosterlitz who was awarded the Nobel Prize in Physics today. Kosterlitz is a member of the Brown University Department of Physics who donated their Cray Jedi to us two years ago.

His research on exotic phases of matter includes thin films at cryogenic temperatures that lead to superconductivity and superfluidity. During the 1990s he used this Cray J90 to model these phenomena.

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An interesting piece on communicating science about astrology.

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 Watch a video of the restored Millionaire Mechanical Calculator, invented in 1895. This mechanical calculating machine was used at Van Vleck Observatory for astronomical data reduction.

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Watch a video of the restored Millionaire Mechanical Calculator, invented in 1895. This mechanical calculating machine was used at Van Vleck Observatory for astronomical data reduction.

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my photo of the "dynamo house" (first posted here in 2013) has now been published by the The Boston Society of Architects

http://www.architects.org/architectureboston/articles/just-one-look

the original photo album and captions at: https://plus.google.com/+MichaelUmbricht/posts/J6Wai8z4QDz
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