For gamma rays, it's by definition. Gamma rays are emitted from nuclear decay events, so even if a black body were to emit a photon with the same frequency as a gamma ray, it wouldn't be a gamma ray.
X-rays, though... at the high frequency end of the spectrum, the intensity of the radiation emitted is proportional to e-v. Since v (which should really be a Greek nu) for X-rays starts at around 3x1016, e-v is a very very small number indeed.
the gamma ray.
Gamma rays have energies higher than that of X-rays. It is true that there is some overlap of the upper end of the X-ray spectrum and the lower end of the gamma ray spectrum, but the X-ray spectrum falls below that of the gamma ray spectrum. For these reasons, if someone asks if X-rays can have higher energies than gamma rays, the answer would be in the negative.
Gamma rays.
The radiation emited is gamma ray
Generally speaking, it is gamma rays that have a higher frequency (and energy) than X-rays. The upper end of the X-ray spectrum and the lower end of the gamma ray spectrum enjoy a bit of overlap, but the X-ray does not have a higher frequency than the gamma ray.
Gamma, i.e. photon emitted from the nucleus, has the highest penetrating power.
Gamma rays are a part of the electromagnetic spectrum.
gamma ray
it would be charge
'Spectrum'.
A gamma ray is an electromagnetic wave. It has the highest frequency (and energy) as well as the shortest wavelength on any wave on the electromagnetic spectrum.
It is like high radiation that comes from a star.