this post was submitted on 07 Oct 2023
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My math: Boiling a cup (0.24 kg) of water from 25°C to 70°C ~45kJ (0.24kg×45°C×4182J/kg°C) Raising 0.24 kg of water up a height 30,000 m ~ 71kJ (0.24kg × 9.8m/s^2 × 30,000 m)
So my math says raising the temp of a cup of water from room temp would be equivalent to raising it about 19 km high.
Edit: I'm a moron who can't read, boiling water from 25 to 100 °C takes:
0.24 kg × 75 °C × 4182 J/kg°C ~ 75kJ
Water boils at 100°C
God I'm stupid. I misread what you wrote as raising water to 70°, not raising water by 70°, without even thinking that that's not how you make tea. Fixed my math, and the numbers now check out.
Actshually, that is how you make green tea
They could drink green tea, which seeps at around 70.
Or that could be jasmine, its one of them.
In the ISA atmosphere model, the tropopause starts at an altitude of 11 km. So you might be able to say that 19 km counts as 'stratosphere'.