Laser n. device for concentrating electromagnetic radiation or light of mixed frequencies into an intense, narrow concentrated beam.

[fr. light amplication by stimulated emission of radiation.]

Webster's Dictionary

For a better and more in-depth definition go here.

Ever since I saw Pink Floyd's "The Wall" laser show in seattle I have been hooked on laser. More so now then when I took Physics in grade 11 and 12.

Below I have listed some of the better Laser Links and a Laser gallery showing some of the things Laser can do :)