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whitequark's profile
whitequark
whitequark
whitequark
@whitequark

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whitequark

@whitequark

http://whitequark.org  · http://llvm.moe  · http://powerlinesinanime.tumblr.com  · working on quantum computers for a living · DMs open · she

Joined July 2010

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    1. Clifford Wolf‏ @oe1cxw Sep 28

      How to measure the volume of your bathtub: - Fill with cold water - Heat electrically with known constant power - Measure rate of temperature change

      8 replies 1 retweet 25 likes
      whitequark‏ @whitequark Sep 28
      Replying to @oe1cxw

      ok so, try the following experiment. put boiling water into an *open* thermos flask. heat loss through conduction is minimal, so almost everything you see is heat loss due to water's immense heat of evaporation, and evaporate it does

      10:34 AM - 28 Sep 2018
      • 5 Likes
      • Eric LaForest Michał Dominiak Clifford Wolf Striving
      2 replies 0 retweets 5 likes
        1. New conversation
        2. Clifford Wolf‏ @oe1cxw Sep 28
          Replying to @whitequark

          I could try to find the point where I add constant electrical power without change in water temperature, and subtract that power from what I add, but I don't expect much loss since I'm trying to heat water from ~8 C to ~18 C in a closed humid and electrically heated room.

          1 reply 0 retweets 2 likes
        3. whitequark‏ @whitequark Sep 28
          Replying to @oe1cxw

          ohhh, yeah, with that temperature differential it would work way better.

          0 replies 0 retweets 1 like
        4. End of conversation
        1. New conversation
        2. whitequark‏ @whitequark Sep 28
          Replying to @whitequark @oe1cxw

          a better idea is to time filling a container of a known volume with cold water, and then, without turning the knob, time filling the entire bathtub

          1 reply 0 retweets 1 like
        3. Clifford Wolf‏ @oe1cxw Sep 28
          Replying to @whitequark

          Of course. But that's boring. So I only do that to have something to compare against.

          0 replies 0 retweets 2 likes
        4. End of conversation

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