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A comment on Inside tiny tubes, water turns solid when it should be boiling. Parent comment

Re:Inside tiny tubes, water turns solid when it should be bo... by jessriedel on Tuesday November 29, 2016 @09:07AM (#13063076)
> Moreover the difference between 1.05 and 1.06 nm drastically affected freezing point.

I think the author might have misread something. The Van der Waals radius of a carbon atom is only 0.17 nm, so the radius of a single tube can't vary in steps of 0.01 nm. Maybe this just referred to the average tube radius?

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Re:Inside tiny tubes, water turns solid when it should be bo... by tgb on Tuesday November 29, 2016 @10:48AM (#13063738)
Hmm. A tube is composed of many carbon atoms in a ring. Add one more atom, you increase the circumference by 0.34nm but the radius only by 0.34/2pi=0.054nm. So still looks infeasible.
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