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December 15, 2020 Archives
Tuesday, December 15, 2020
THE HAPPENING WORLD: Stephen Wolfram on Computation and the Fundamental Theory of Physics
For much more information, visit the Wolfram Physics Project Web site and/or read his book, A Project to Find the Fundamental Theory of Physics. I believe this is one of the most interesting intellectual undertakings at the present time.
Posted at
19:57
CONTINUITY: Mechanical Frequency Meters
I haven't seen one of these for decades. They're a remarkably clever application of resonance in an electro-mechanical system.
UPDATE: Responding to viewer comments, and demonstrating with a variable-frequency driver.
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19:23
TRACKING WITH CLOSEUPS: Out of Fuel at 41,000 Feet: Understanding the “Gimli Glider” Incident
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14:52
CONTEXT: Dead Simple Time-Domain Reflectometry with Just a Battery and an Oscilloscope
Dead Simple Time-Domain Reflectometry with Just a Battery and an Oscilloscope
— hackaday (@hackaday) December 15, 2020
“Time-domain reflectometry” sure sounds like something that needs racks of expensive equipment to accomplish. In reality, TDR is just measuring the time between injecting a pu… https://t.co/KdMSV8VXF1
We used optical time-domain reflectometry here at Fourmilab to figure out where to dig up the street when rats interrupted our fibre-optic Internet connection.
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00:31
CONTINUITY: 1966—NASA Strands Ten Million Living Organisms in Earth Orbit
Launched #OTD in 1966, Biosatellite 1 carried more than 10-million tiny living organisms into space to study the effects of the space environment on life processes. Unfortunately, the vehicle's reentry rocket failed, leaving the capsule and valuable data stranded in orbit. pic.twitter.com/hlcxLTHVzL
— NASA History Office (@NASAhistory) December 15, 2020
Me no Laika.
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00:16