Wind chill factor

[Rover 9]

If you put an ordinary thermometer in a windflow - like in the airvent inside an aircraft - will it give a true reading or is it affected by a 'windchill' factor?

2 wrongs don't make a right - but 3 lefts do.

[NewGuy2005 51]

The thermometer would not be affected by wind chill

From Wilipedia:
Wind chill is the apparent temperature felt on exposed skin due to wind

http://en.wikipedia.org/wiki/Wind_chill

[JohnRich 4]

Quote

If you put an ordinary thermometer in a windflow - like in the airvent inside an aircraft - will it give a true reading or is it affected by a 'windchill' factor?

Someone get a thermometer, hold it up in front of a fan, and see if the mercury drops.

[riggerrob 558]

A dry thermometer will not read "wind chill factor" when the wind changes.
You need a special wet thermometer to read "wind chill factor."

[billvon 2,426]

>You need a special wet thermometer to read "wind chill factor."

That's relative humidity, not wind chill.

Wind chill is an effect where rapidly moving air transfers more heat from a warmer body than still air does. If the air is 98.6 degrees, there is no "wind chill" at all, because it can't transfer heat away through conduction. However, the wind can still cool people at those temperatures, because people sweat - and evaporation _does_ cool you when the wind is moving faster.

To test for wind chill you use a heated thermometer and see how much the temperature drops under varying conditions. (That's also a way to measure airspeed BTW.)

[bpeck 0]

Or just find out the temp and wind speed. Then find a wind chill table..

[pirana 0]

Quote

If you put an ordinary thermometer in a windflow - like in the airvent inside an aircraft - will it give a true reading or is it affected by a 'windchill' factor?

Actually, all other things being equal, with a high enough windspeed, the thermometer will actually read higher, not lower. Friction of the air passing over it will raise the temperature of the thermometer.

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