= 27d567bc2d48d9f40e9ccc20ea370b15)
bogdanb comments on Harry Potter and the Methods of Rationality discussion thread, part 26, chapter 97 - Less Wrong Discussion
You are viewing a comment permalink. View the original post to see all comments and the full post content.
= 783df68a0f980790206b9ea87794c5b6)
Loading…= b715d02e85f7b3b4ae65ca3d3e450868)
Subscribe to RSS Feed
Powered by Reddit
= f037147d6e6c911a85753b9abdedda8d)
Comments (501)
Wikipedia claims 10°C, but it also says “Sulfuric acid in solution with water causes significant freezing-point depression of water's melting point”, which suggests that both Harry and HowStuffWorks are right. Harry is probably thinking of the pure acid.
(Also, that wouldn’t affect his plan. He only needs it solid so he can transfigure it, and the only significance of the freezing point is that it’s easily reachable, not exactly how high it is above 0°C.)
So it does; that must be Harry's source (^_^). It would be consistent that 98% freezes at 3° and 100% freezes at 10°, but HSW also says that you can't get more than 98% (presumably because it draws water from the air, it doesn't say).
I agree, this doesn't really affect anything. If Harry can't make a concentration that freezes at 10° but can make one that freezes at 3°, then that's what he'll use. (I only looked into this because it was such a surprising claim.)
And, he can easily get to 4 degrees on fairly large masses using the cooling spell he used on Hermionie's corpse.
Cooling spell, right, no need for ice!