Lasers
The first laser ever to be created was by Theodore H. Maiman ,Charles Hard Townes and Arthur Leonard Schawlow
how lasers work
They work by getting light to concentrate on one place multiple times in a narrow side and creates a powerful beam that can be used to just show light in a specific or area or cut through metal if needed
everyone can benifit from lasers because theyre really cheap where u can get one for 13 dollars and the laser beam can still reach 3 miles into the sky and many people use it and point it at pilots with over 548 reports of it happening in year even though its a criminal offence and it can go all to 300 dollars which can burn money if pointed at it and can make holes through stuff
laser eye surgery
People can also benifit from lasers by doing laser eye surgery which can correct vision if done properly and all with a help of some lasers that cost around 2000 dollars per eye
interesting facts
there are military lasers than can blow up a rocket or a boat from 1.5 km away after only seconds of impact
cons
It's a cheap device that can cause damage if its in the wrong hands and it can easily cause planes to crash and blind pilots
Any one can get their hands on it
Any one can get their hands on it
Pro's
Anyone can get their hands on it
it can be used in lots of good ways
Military weapons that are powerful but not lethal