1. Limited time only! Sign up for a free 30min personal 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!

Outside the Electromagnetic Spectrum

  1. Mar 17, 2012 #1
    Is it possible for EM radiation to exist outside the EM spectrum? I'm aware of the different frequencies at which energy can be radiated eg. radio, infrared, and gamma. But is it possible for objects to absorb or release energy at subradio or supergamma frequencies? Or is there a physical law that prohibits these phenomena?

    Any feedback would be appreciated.
  2. jcsd
  3. Mar 17, 2012 #2

    Vanadium 50

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2017 Award

    The EM spectrum encompasses all EM radiation, so by definition you cannot have EM radiation outside the EM spectrum.
  4. Mar 17, 2012 #3
    Is there a physical law that creates this limitation or is it just a matter of technicality, where lower or higher frequencies are no longer defined as having electromagnetic nature? I'm just wondering whether those extremes fall into quantum energies or with dark energies.
  5. Mar 17, 2012 #4


    Staff: Mentor

    No, it is just that there is no such thing as lower or higher frequencies. The EM spectrum goes from 0 to infinity, there is no frequency lower than 0 and no frequency higher than infinity.
  6. Mar 17, 2012 #5
    Thanks. That clears it up.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook