X-radiation

It was therefore planned that the meiotic stages in spermatogenesis of this species should be subjected to x-radiations with and without the maturation-stimulating influences of the anterior pituitary hormone, to determine the rapidity with which the physical changes in chromosomes are brought about by x-radiation.

Radiation in the electromagnetic spectrum used in radiation therapy includes gamma and x-radiation; x-rays and gamma rays are found at the upper end of the spectrum with short wavelengths, high frequency, and high energies.

With voltages above about 200 kV, in addition to efficiency we must consider the Compton effect, that is, the emission of x-radiation in a preferred direction instead of radiation with a spherical characteristic.