light (since that is what a laser is made of). Light from our sun, or from an

electric bulb, is called white light. It is really a mixture of all the different

colours of light. The colours range from violet, indigo, and blue, to green,

yellow, orange, and red. These make up the visible part of the

electromagnetic spectrum. Light is made up of particles, called PHOTONS,

which travel in waves. The difference in the colour depends on the

wavelength of the light. Violet light has the shortest wavelength while red has

the longest. There are other parts of the electromagnetic spectrum which

includes infra-red, radar, television radio and micro- waves (past red on the

spectrum), and on the other end of the spectrum are the other invisible

radiations, ultra- violet, X rays, micro waves and gamma rays. The

wavelength of the light is important to the subject of the laser. A laser is made

up of COHERENT light, a special kind of light in which the wavelengths of

the light are all the same length, and the crests of these waves are all lined up,

or in PHASE. The word Laser is an acronym for Light Amplification by

Some people might say that the laser is one of the most important

The helium-neon laser has hight frequency stability and Carbon Dioxide

a pure gas or a mixture of gases or even a vaporized metal in a quartz tube.

ruby rod. A trigger electrode was connected to the quartz tube. All of this was

by a prism inside the laser cavity. An electron laser is a laser which uses free

medium. Media can be liquids, solids, gases, or a mixture of gases, such as

another photon of a specific wavelength. When a loose photon hits an atom

Some common words found in the essay are:
Theodore Maiman, Carbon Dioxide, , Emission Radiation, VA Fabrikant, Albert Einstein, coherent light, laser laser, quartz tube, stimulated emission, light laser, laser coherent light, light particles, wavelength light, medium produces, electromagnetic spectrum, photons released, stimulated emission radiation,
Approximate Word count = 981
Approximate Pages = 4 (250 words per page double spaced)