what is the impact that lasers have on everyday life?
Well lasers are extremely important to humans, and this is why:
Medical lasers are important as they can be used as a scalpel, because the laser can be controlled and and also has such a small contact area, it is ideal for fine cutting and depth control.
Medical lasers are also used to to reattach retinas.
Another use for a Medical laser is stitching up incisions after surgery by binding together skin.
Because the laser has an extremely accurate point, and possess a beam strong enough to melt through most solids, and vaporize some liquids, makes the laser perfect for industrial metalworking. A special laser called a cutting laser, burns a clean hole in the metal whereas a drill or other cutting device will produce wasteful shavings.
This is the hole that a drill produces
This is the hole that a cutting laser produces.
Laser shows are quite popular and the special effects are stunning. They use lasers in the visible spectrum along with vibrating mirrors to paint images in the air.
One of the most wide spread use of lasers is in technology.
People us lasers everyday without even knowing it. Lasers are used for reading CD's and DVD's. CD's and DVD's function in similar ways, a CD/DVD has a reflective aluminium layer that has very small ridges engraved in it. The laser records the ridges and a computer reads the information and turns it into audio and/or video.
Another of the many uses of laser is communication. The laser beam is shot down A fiberglass tube to a receiver. These wires can be very long without no loss of signal quality. Also modern multiplexing of the line lets two lasers of different frequencies share the same line.
The other great fact about fiber optic cables is that they do not use any electricity.
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