Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The wind chill factor?

  1. Dec 30, 2008 #1
    What exactly is the wind chill factor? Do conventional mercury thermometers measure the wind chill factor?
     
  2. jcsd
  3. Dec 30, 2008 #2

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

  4. Dec 30, 2008 #3

    Danger

    User Avatar
    Gold Member

    Thanks for that link, Mgb. I've had a bit of trouble adjusting to the new standard. It sounds so much warmer these days, while I remember it hitting 75° below F. when I was a kid. Now it's like -50 C. and feels the same. Even accounting for the conversion between F & C, the numbers are considerably different.
     
  5. Dec 31, 2008 #4
    Hello
    Thank you for your replies. In what ways is a human different to a thermometer, that would mean the former are subseptible to the wind chill factor while the latter are not?
    Thanks
     
  6. Dec 31, 2008 #5
    The human differs from a thermometer because (1) the human skin is moist, and in the presence of wind, this leads to evaporative cooling, and (2) the human body generates heat, so there is a heat flux from the body surface to the ambient environment. You can "feel" the effect of wind, the idea is that when the wind blows, it "feels" to you like the air is colder. The various wind chill scales (in my opinion) all have their own problems.
     
  7. Dec 31, 2008 #6

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hello p.tryon! :smile:

    A thermometer is the same temperature as what it is measuring, but a human is usually warmer. :wink:

    (So a human can be insulated by a surrounding layer of air, which the wind can make thinner.)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: The wind chill factor?
  1. Motor Windings (Replies: 1)

  2. Wind Damage (Replies: 1)

  3. Cold wind and Hot wind (Replies: 11)

Loading...