QI Last season

[BagPussAA]

On QI last season they humiliated one guest by asking him a question about absolute zero and then when he answered they told him he was wrong because someone had written in and said he was 0.0001 degree out. Who was he? Sorry it is a bit vague..

[The Big Gill]

I think it might have been Dara O'Briain you were thinking of.

[kempie]

Wasn't it actually about the triple point of water rather than absolute zero?

By international agreement absolute zero has a value of exactly -273.15 �C (0 Kelvin)

The triple point of water is the single combination of pressure and temperature at which water, ice, and water vapour can coexist in a stable equilibrium and occurs at exactly 0.01 �C (273.16 K) and a vapour pressure of 611.73 Pa.

[BagPussAA]

Thanks Gill.. It was Dara

[JamesEverton]

https://www.youtube.com/watch?v=tKmYyGyGEV8

Fast forward to about half way.