A handheld laser likened to a Star Wars lightsaber — and so powerful it can instantly blind and “set fire to skin and other body parts” — can be bought readily (and inexpensively) online. The device — ...
What if you held in your hand a device so powerful it could ignite wood in seconds, melt metals with ease, and even create synthetic rubies? The world’s strongest handheld laser, boasting a staggering ...
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