1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Temperature and color - why hot objects glow red?

  1. Jun 17, 2007 #1
    Is there any reason why most hot things alost always begin to get the tinge of red??
     
  2. jcsd
  3. Jun 17, 2007 #2
    hi mehrzad...yeah there is a reason...it is related to their thermic radiation spectrum...when you heat up an object like a piece of iron...it will emit higher energetic radiations...from Infra-Red it changes to Red...then Orange...Yellow...White...Blue...UV...and so on

    (wavelength peak)=(B)/(Temperature)----»for a blackbody
     
  4. Jun 17, 2007 #3

    malawi_glenn

    User Avatar
    Science Advisor
    Homework Helper

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

    http://en.wikipedia.org/wiki/Planck's_law_of_black_body_radiation
     
  5. Jun 17, 2007 #4
    if you want to know more about this branch of thermodynamics...look for ultraviolet catastrophe, it's interesting
     
  6. Jun 18, 2007 #5
    Remember red is cold and blue is hot. I still don't recomend touching a piece of steel that is red.

    CraigD, AMInstP
    www.cymek.com
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Temperature and color - why hot objects glow red?
  1. Red-hot materials (Replies: 11)

  2. Hot objects (Replies: 10)

Loading...