Well if we didn't have light then we could not see.
was light used and series light
Gas light was used before the electric light and before gas light, candles were used.
Adjustment knobs are used to focus light in a light microscope.
A ray of light is used to represent a light path.
Fiberglass is used for light conduction.
Light
to convert electricity into light
where was the first light bulb used
Visible light is used for sight but is also used in LASERs and were used in Polaroid cameras.
If iron is used, there will be no light emitted from the light bulb as iron is opaque.
Adjustment knobs are used to focus light in a light microscope.