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Laser beams are [[phase coherent]] and self-[[parallel]] (they do not spread out), due to the way they are created.
Laser beams are [[phase coherent]] and self-[[parallel]] (they do not spread out), due to the way they are created.
The use of lasers is very important in [[science]] and [[medicine]]; they have also become ubiquitous in [[Compact disc|CD]] and [[Digital video disc|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.
[[category:technology]]
[[category:technology]]