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Lasers
Part 1 of Paper
....on a spot as tiny as the head of a pin?
The first major advancement in laser development came in 1954. This was the year that Charles H. Townes, an American physicist, created a device that amplified microwaves. This device was actually called a maser at first, which was short for Microwave Amplification by Stimulated .... Part 2 of Paper
....t produces a very narrow powerful beam of light. A laser light is a narrow beam of light, in which all the waves are traveling exactly at the same length and moving together as one. A laser light is made up of only one wavelength and it is a single pure color, while a normal light has many different wavelengths or colors.
The most common laser has three parts to it. They are energy source, an active medium, and optical cavity. An energy source can be anything that can give energy to the active m.... |
| Number of words: 1733 - Approximate pages: 7 |
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