I like to find out stuff by listening to people who know more than I do. And when they’re stuck in a line with me, this is what happens.
Good Reason
It's okay to be wrong. It's not okay to stay wrong.
© 2024 Good Reason
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I like to find out stuff by listening to people who know more than I do. And when they’re stuck in a line with me, this is what happens.
© 2024 Good Reason
Theme by Anders Noren — Up ↑
14 January 2012 at 12:13 pm
love it. hey, where's the beard? I saw you at the graduation the other night (as I was on my way to check on a whining child) and thought it looked great.
14 January 2012 at 12:41 pm
Oh, thanks.
I've been trying to make an updated cartoon of me that reflects what I look like now with the beard and hair. It's not finished yet, but it's nearly there.
15 January 2012 at 2:46 pm
Oh, I read about that one in a book of physics problems by Y. Perelman! (Problem #145 — I don't know the title of the book in English).
The pressure that the blade of the ice skate places on the ice lowers the melting temperature of the ice. The weight of your whole body is concentrated on these two thin blades of metal, so the pressure on the ice immediately below the blades is extremely concentrated — lowering the ice's melting temperature, and creating a very thin, localized layer of water to slide on. That's why you can slide with skates but not with shoes (that spread your weight-pressure over a greater surface area).
15 January 2012 at 7:10 pm
P V = n r T?
That's all I remember. 🙂