We're having a heat wave... a tropical heat wave....
I'm hoping to find time to get new inner-tubes for my bike today. The only joy I get out of hot weather is bike riding. And my bike is partially-disassembled throughout my living room. Sigh.
The Mercury Wave is Like a Pendulum Wave, But Vertical
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Marcel Clemens made what he calls a mercury wave. Small bottles are
suspended on springs, each of them carrying a slightly different amount of
mercury....
2 hours ago
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