Timeline for Why is my breath hot when i open my mouth all the way, but cold if I blow like a whistle? [duplicate]
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Apr 10, 2015 at 9:19 | vote | accept | humble | ||
| Feb 26, 2015 at 15:10 | history | closed |
John Rennie Qmechanic♦ |
Duplicate of Why does the air we blow/exhale out from our mouths change from hot to cold depending on the size of the opening we make with our mouth?, Why the breath sometimes warm and sometimes cold? (2 different explanations!) | |
| Feb 26, 2015 at 15:05 | history | edited | Qmechanic♦ |
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| Feb 26, 2015 at 15:05 | comment | added | Qmechanic♦ | Possible duplicates: physics.stackexchange.com/q/7868/2451 | |
| Feb 26, 2015 at 15:00 | comment | added | John Rennie | possible duplicate of Why the breath sometimes warm and sometimes cold? (2 different explanations!) | |
| Feb 26, 2015 at 14:38 | comment | added | humble | @Brionius how does joule thompson effect explain this? | |
| Feb 26, 2015 at 14:29 | answer | added | Olin Lathrop | timeline score: 2 | |
| Feb 26, 2015 at 14:03 | comment | added | Brionius | I've seen a remarkable number of different explanations of this, from the Joule-Thompson effect, to the effect of entraining more outside air when you purse your lips and blow, to adiabatic expansion, to evaporative effects due to increased airspeed, or simply increased convection. I'm not entirely convinced by any of them, and I'm very curious to see the answers here. | |
| Feb 26, 2015 at 13:30 | history | asked | humble | CC BY-SA 3.0 |