Why do some lights flicker first before completely turning on?
In: Engineering
Some kinds of light such as fluorescent ones, need heating to be able to move enough electricity through the contained gas.
I think what happens is that gas is ionised, emits light and loses so much energy in the process, that it needs a moment until it is ionised again.
Ionisation is when electrons are pulled off the gas atoms.
Yes the fluorescent tubes need ionised vapour or gas to operate….
It’s like electricity starts to conduct between two sides of tube but suddenly stops because the population of ions fall off….
The ionised gas upon conducting electricity gives some charge to fluorescent coating on the tube and we get light….
Till there is continuous replenishment of the charge the tube keeps on flickering….
And the choke and starter make sure the charge electricity and energy is continuously replenished to get light.
This involves little heating as well
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