E-folding time has occurred, so the next one is: X-ray flux
a super-pain ultraviolet lamp
Technical definition
The intensity of X-ray radiation per unit area per unit time, typically measured in erg cm^-2 s^-1.
a super-pain ultraviolet lamp
The intensity of X-ray radiation per unit area per unit time, typically measured in erg cm^-2 s^-1.