Difference between revisions of "Laser"
Jump to navigation
Jump to search
(Bar code scanners) |
|||
| Line 4: | Line 4: | ||
The use of lasers is very important in [[science]] and [[medicine]]; they have also become ubiquitous in [[CD-ROM]] and [[DVD]] players and as pointers. | The use of lasers is very important in [[science]] and [[medicine]]; they have also become ubiquitous in [[CD-ROM]] and [[DVD]] players and as pointers. | ||
| − | [[http://lisa.jpl.nasa.gov/]] | + | [[http://lisa.jpl.nasa.gov/]] They're also used in bar code scanners. |
[[category:technology]] | [[category:technology]] | ||
Revision as of 16:32, March 1, 2012
Laser is a word formed from the acronym "Light Amplification by Stimulated Emission of Radiation."
Laser beams are phase coherent and self-parallel (they do not spread out), due to the way they are created, although many cheap laser pointers exhibit beam dissipation due to cheap manufacturing. This is much more of a problem with Indian and Chinese-manufactured components, as American manufacturers are held to higher standards in workmanship and materials. [1]
The use of lasers is very important in science and medicine; they have also become ubiquitous in CD-ROM and DVD players and as pointers. [[1]] They're also used in bar code scanners.