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The Laser
Beginning of essay
Before we can learn about we need to know a little bit about
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, ....
Middle of essay
....chnology set the stage for the first maser (a laser made up of
micro-waves), and this in turn helped to produce more advances in this area of
science. These efforts cumulated in July 1960 when Theodore H. Maiman announced
the generation of a pulse of coherent red light by means of a ruby crystal-- the
first laser.
Laser light is produced by pumping some form of energy, such as light, from
a flash tube (see below) into a LASING material, also known as a medium. Media
can be liquids, solids,.... |
| Number of words: 981 |
Approximate pages: 4 |
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