Will incandescent light be white?
Inert gas into the bulb, the light when the inert gas is excited, emitting a characteristic line, showing different shade.
Can use inert gas made of a variety of electric light sources, such as beacon lights, strong lights, flash, neon lights and so on.
Each element can only emit some specific frequency of light, it has its unique spectral line - characteristic lines, their lines are different, just as each of us has a different fingerprints.
Not necessarily. If there is a gas medium inside the bulb, it will send a different light.
