| Lasers have numerous applications in various fields. They have made measurement an exact science. Astronomers have used lasers to measure the moon's distance from Earth to within a few centimeters. Mappers and builders use laser technology every day. For example, drawing a perfectly level straight line on a construction site is easy using a laser. Manufacturers have used lasers for years to cut and join metal parts. And the jewelry industry uses lasers to write on the surface of the world's hardest substance, diamonds. Lasers have also changed the way we live. Super-fast Internet connections let people watch movies and send huge amounts of information at the speed of light. Laser printers can print out forms and documents quickly and are relatively low in cost. Laser barcode scanners have changed how stores record almost everything. They help businesses keep track of products. They help in storage and every detail of the supply process. |
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