upper/lower *theoretical* limits for photon wavelength

i am wondering whether 1- there is a lower limit for short photon
wavelength, or what would happen to the photon as it continually gets
more energetic. will it sponatenously become a electron-positron pair?

also, i wonder if thereis an upper limit for long wavelength photons.
it's my understanding radio waves can have wavelengths in kilometers.
is there a minimum energy a photon must have, or could it have a very
very low energy approaching zero?

.

Relevant Pages

  • Re: 1c+1c Light and matter
    ... I am considering a photon like a helicopter- if the machine ... > the speed is ALWAYS c if we multiply MEASURED wavelength (not the real ... > that produces a magnetic field, and waving a bar magnet past a solenoid that ... > call gravity, however tiny? ...
    (sci.physics)
  • Re: 1c+1c Light and matter
    ... I am considering a photon like a helicopter- if the machine ... > the speed is ALWAYS c if we multiply MEASURED wavelength (not the real ... > that produces a magnetic field, and waving a bar magnet past a solenoid that ... > call gravity, however tiny? ...
    (sci.physics.relativity)
  • Re: an electron question
    ... |> photon. ... we obviously obtain the total amont of energy ... wavelength. ... a photon upon detection, eq. ...
    (sci.physics)
  • Re: The planet orbiting Algol.
    ... >>> If c is the initial speed of the photon and c' is the speed ... The wavelength at c is measurable. ... >>which is of course a curve that oscillates around the X axis, ... > Paul said it didn't. ...
    (sci.physics.relativity)
  • Re: The planet orbiting Algol.
    ... >>Do behave, H. The velocity of light is real enough, relative to the ... >>The wavelength at c is measurable. ... Each photon gets one each for Chrystmas. ... I reckon wavelength is a length. ...
    (sci.physics.relativity)