LASER is an acronym, however it’s an acronym that most people don’t even know is an acronym anymore. I think the blame for that can be on displaying LASER in text as you would any other word, lowercase. It stands for Light Amplification by Stimulated Emission of Radiation. LASERs are very important to our digital world. But did you also know that there are two main types of them? No, probably not.
The two types are Gas and Diode. Naturally they both have advantages and cons. There is one thing I didn’t know though: power has nothing to do with the wavelength (color) of a laser. That’s based on the gas used to generate the beam, or the lenses the beam travels through. Nothing else. Power denotes just that, the power of a beam. Is it strong enough to light a match, pop a balloon, or hit the moon and return? I thought color was tied to power. I’m not sure why, I never really looked into it at all.