Fluorescent lamp
device · 1938 · Electric age
A gas-discharge lamp with a phosphor.
What it is made of
- Phosphor coating — has part. A coating that glows under UV.
- Electrodes — has part. Heating filaments at the ends.
- Lamp ballast — has part. A choke and starter or an electronic ballast.
Principles and materials it uses
- Plasma — uses. A discharge in mercury vapour.
- Ultraviolet — uses. UV excites the phosphor.
- Mercury — is made of. Mercury.
- Glass — is made of. A tube.