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I know it's a vague question but here goes. Anyone know or estimate how powerfull lasers can be? What are powerful lasers being used for, either constructively or destructively? Can you shoot down a satellite, or an airplane with one? Can you cut a soldier in half...? Comments?

Distance of laser light traveled. How do you determine how far it will go? Curious how you folks determine how far a laser light will travel so it can be seen? Do you attach it to a tripod and start walking in the distance it is pointed and look back towards the laser...? How does one...

Can anyone tell me anything you might know or guess about what this laser does, ie how new or old it is, how much power is required (can I operate it on a car lighter power inverter?), how far the light goes, what it came from originally, what is was used for, what it can be used for now, what...