Inventions
How Do Light Bulbs Work?
A light bulb is a device that emits light from a thin filament inside a glass or metallic, evacuated lamp. The illumination consists of some combination of visible and invisible components, which may be used to produce white light. Most bulbs use a metal filament that heats up due to electric current passing through it. The heat causes the filament to emit light as it cools down, releasing energy in the form of photons. Learn how the different types of light bulbs work and their advantages and disadvantages.
What Is The Difference Between Fluorescent, Incandescent, And Led Bulbs?
The three main types of light bulbs vary in how they produce light, but all work by heating a filament, or “Wire”, to a temperature where it emits light.
Fluorescent bulbs contain a low-pressure mercury vapor that is excited by electricity, which then produces ultraviolet light. This UV light then reacts with a phosphor coating on the inside of the…
