The longest detectable radio waves would probably have wavelengths of about 300 000 000 meters but no more, theoretically hypothesized. This would correspond to a frequency of 1 hertz or 1 cycle per second. However, the engineering technology of communication has already set the longest communication frequency of electromagnetic waves at 10 000 hertz. On the other hand, the energy of one photon vibrating or oscillating at the frequency of 1 hertz would be equivalent in magnitude to Planck’s constant of action or 0.000 000 000 000 000 000 000 000 000 000 000 6626196 joule of energy. Converting this value to electron energy is simply to divide it by 0.000 000 000 000 000 000 16021 J/eV giving the value in electron volt as 0.000 000 000 000 00413594407. It would take the total energy of about 200 000 000 000 000 of this long wave photon in order to move a single electron inside a detector. If this number is the same as the number of graviton needed for its detection then it impossible at present detector engineering technology to ever detect it.


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