|
This is a free sample preview of the essay
Lasers 3
Beginning of essay
The idea for the laser started as long ago as 1905 when Albert Einstein suggested the simulated emission of light. Light sources ie. candles, florescent substances, torches, and light bulbs give of packets of energy, called photons, when their atoms are excited by energy. Einstein suggested that th ....
Middle of essay
....rgy source, two facing mirrors on the sides of the florescent material, and external energy source.
Theodore Maiman was the first to successfully assemble an optical laser. In 1960 Maiman produced the ruby laser. In it a strobe lamp is coiled around the core, a rod of ruby that has mirrors at its ends, one of which is only partially solid. As the strobe light flashes it excites the ruby atoms that in turn emit photons. The photons are reflected back and forth by the mirrors until they pass throu.... |
| Number of words: 809 |
Approximate pages: 3 |
|
Need help with writing your essay? Sign up today to view the rest of this paper and get unlimited access to over 45000 other essays just
like it. Some other sites charge you for each essay, but here at EssayPal we give you full access to our entire database for one low subscription
fee. Thousands of other students around the world have realized what an affordable deal this is and have become members. Come see what
you are missing out on. Once you've become a member, you will not go back to the other term paper sites either.
| Length |
Type |
Price |
PayPal |
| 30 days |
recurring |
$19.95 |
| 90 days |
recurring |
$39.95 |
| 180 days |
non-recurring |
$69.95 |
|
|
|
