Essay about What 's The Science Behind Light?

1078 Words Oct 15th, 2016 5 Pages
What’s the science behind light?
A lightbulb is “a glass bulb inserted into a lamp or a socket in a ceiling, that provides light by passing an electric current through a filament or a pocket of inert gas.” ("Light Bulb - Definition of Light Bulb in English | Oxford Dictionaries") Light is a form of energy emitted by an atom. Light is made up of many light photons, which are small particles that have energy and momentum but no mass. Atoms release photons when the electrons become “excited” and then return to their original orbital. The colour of the light is dependent upon the wavelength of the emitted light, which is dependent upon how much energy is released. The energy released is dependent upon what energy level the electron had before being “excited” since it will release the excess amount of energy to return to this level. So the material being used in the lightbulb is directly related to the colour of light created. This is the science behind what makes a lightbulb, but what is the lightbulb itself?

What is an incandescent lightbulb?
Lightbulbs have a very simple structure. The first portion of the lightbulb is the base, which is a brass or aluminum component where electrical contact is made. There is one lead-in wire that is soldered or welded to the rim of the base interior. The other lead-in wire is soldered to the center contact. The two portions are insulted from each other by a glass insulator, which appears as a black ring around the center contact. The next…

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