In a laser you are basically getting photons to behave exactly the same way. Trillions of them. To do that two things are required, keep a bunch of atoms continually excited by heat, electricity, whatever. And secondly,…
In a laser you are basically getting photons to behave exactly the same way. Trillions of them. To do that two things are required, keep a bunch of atoms continually excited by heat, electricity, whatever. And secondly,…