This finding had great practical importance as it allowed detection of nuclei through resonance absorption by electrons.
When excited by electrons, it has virtually no afterglow (70 ns decay time).
The past slowly faded out, replaced by electrons and tarmac and concrete.
The problem occurs after prolonged bombardment by electrons.
When excited by high-speed electrons, the phosphor gives off light, typically white but other colors are also used in certain circumstances.
The process of X-ray emission by incoming electrons is also known as the inverse photoelectric effect.
The inside of the other plate was coated with a phosphorescent material, that would release light when struck by electrons.
Phosphors are chemicals that glow when struck by electrons.
X-rays are absorbed and/or scattered by electrons in a material.
So far, though, experiments have failed to observe flavor violation by electrons and muons.