Search results

  1. J

    Temperature Limits

    My understanding is the maximum temperature possible is Planck temperature.
  2. J

    What is temperature

    The highest possible temperature, called the Planck temperature, is equal to 10^32 degrees Kelvin.
  3. J

    Why the black objects absorb more light and heat from the other color objects?

    Let me be clear on some basics. Please correct if I am wrong. Energy is a measure on the ability to do work on matter. Matter can do work on other matter, which is kinetic energy (eg; a moving object). EM wave can do work on matter, hence they have energy too. Heat is a just IR wave in the EM...
  4. J

    Why the black objects absorb more light and heat from the other color objects?

    I was wondering how would any substance can be black for the infrared. If a substance reflects all the infrared rays, it should be white for the IR rays. If it absorbs the IR rays, it would cause the lattice to giggle, and emit heat, which is again in IR. So in any case, it should emit IR, right?
  5. J

    Why the black objects absorb more light and heat from the other color objects?

    Why is kinetic energy == heat , for every substance?
  6. J

    Why the black objects absorb more light and heat from the other color objects?

    Is it correct to say, white objects do nothing with the incident EM waves, and black objects change the frequency (to IR range)?
  7. J

    Maximum temperature

    Is there a theoretical upper limit to the temperature attainable by any matter? May be at some extremely high temperature, those particles in the matter get converted into energy (mc^2), and that's the temperature limit of matter?
  8. J

    Heat flow

    As I remember learning in school, heat cannot flow from cold to hot. But isn't that true only for conduction and convection? Radiation heat is purely Infrared waves, and there should not be any issue with that. Please correct if I am wrong.
  9. J

    Speed of heat radiation

    May be I did not clearly state my question. Let me elaborate: Heat is an electromagnetic wave, and in the EM spectra, it is the Infrared wave. The wave hits a conductor, the EM infrared wave causes the atom in the conductor to move/vibrate. The atom got the energy to move around, from the...
  10. J

    Speed of heat radiation

    If the atom transferred the heat energy to kinetic energy, there should not be anymore heat to conduct/convect, right? but, why is the conductor/convector still hot?
  11. J

    Speed of heat radiation

    I just read this URL. http://www.qrg.northwestern.edu/projects/vss/docs/thermal/1-how-does-heat-move.html I am not convinced that the atoms and molecules move when conduction happens. Will it move, or as Pythagorean said, it just vibrates? It should be just vibration. Or there wouldn't be any...
  12. J

    Speed of heat radiation

    But it is vacuum in between all the atomic particles, right? So, heat should conduct through the vacuum inside the material at the speed of light, right?
  13. J

    Speed of heat radiation

    What's the speed of heat radiation in vacuum? And how does the heat propagation (in vacuum and through a conductor) happen? Similar to the particle theory and wave theory for the light, is there any theory for the heat energy?
Top