I have friends who are very tolerant (I think & hope!) of my messaging.pic.twitter.com/alDtLmlbbv
Show this thread
-
When I was a kid my uncle (a physicist) asked me: if the energy it took to heat your bath water one degree was used to lift you, how far could it lift you? I started making progress by imagining trying to heat my bath water by dropping things into it.
What a great problem! A nice variant would be to use a kettle raising a cup of water up to boiling temp. 70 C * 1/4 liter * 4 kJ / liter C = 70 kJ to raise to boiling point. Which is enough energy to raise a person 100 meters in the air.
-
-
(I like the kettle variant because we see that happen in front of us. Whereas the hot water heater for a bath is more hidden. But either way is a great problem. And I love your approach for figuring the number out.)
-
One punchline of this problem is that if we're trying to cut our home energy consumption, heating and cooling - especially of water - are good places to look for savings.
End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.