Sunday, March 28, 2021
Saturday, March 27, 2021
Thursday, March 18, 2021
Speed of sound - Wikipedia
I'm surprised that people figured out the speed of sound 300 years ago.
https://en.wikipedia.org/wiki/Speed_of_sound
https://en.wikipedia.org/wiki/Speed_of_sound
Sunday, March 14, 2021
How the Carbon Taxation Game is Played
I think that that Graph at 9:54 is interesting and relevant to any discussion of Global Warming.
However, I don't have much faith in the estimates. It would be nearly impossible to calculate the total impact of temperature change, good or bad.
Most discussion of temperature change uses the year 1880 as a baseline, presumably because that is when the most accurate records were kept. Since then the average global atmospheric temperature has risen about 1 to 1.1 degrees celsius. This is a little hard to know for certain because the NOAA has been fiddling with the numbers, even changing historical temperatures that we have known for decades as part of "normalization".
However, my point is that the year 1880 was by no means the ideal temperature. In the winter of 1880 to 1881, there were horrible snowstorms in the northern plains that killed a great many people.
Thursday, March 11, 2021
250,000 Dominoes - The Incredible Science Machine: GAME ON!
While watching the video, I was wondering if it ever was going to end, but it is a fascinating watch.
Do Salt Lamps Work?
I found this video fascinating, and I have probably shared it before. When I hear people say that they want to add ions to air, I assume that this is a bad idea because ions are reactive chemicals. It is the equivalent of putting bleach into the air. According to the video, there are many ions in the air already, but compared to the total number of molecules, the number is not significant. The video also demonstrates that salt lamps don't really produce negative ions like they claim that they do.
Friday, March 5, 2021
The History of the World's Highest Jump
We live in a protective bubble whose outside is a hostile universe. It doesn't seem wise to leave it.
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