This was a problem about 75 years ago when storms, such as tornadoes, often caught people off-guard. Lasers, which are devices that generate and amplify coherent light, is an acronym for l ight a mplification by s timulated e mission of r adiation. Laser have numerous applications. In manufacturing, lasers are used to weld and drill metals solving numerous problems in the process. For example, in the past, direct heating with a flame was used to weld which took the welder a long time.
Lasers help speed up the process.
The universal product code, the series of black bars on supermarket items, is read by a helium-neon laser. In the field of medicine, lasers can spot-weld retinas back into their normal place so people can see better. A key advantage of using this laser surgery is the cauterization produced around the excision. This leads to a bloodless surgery, something which caused great pain and fear in the past. Finally, the third, and most common, robot developed after the Second World War was the computer.