The world’s most powerful X-ray laser is ready for operation after a massive overhaul. A powerful upgrade to Stanford’s Linac Coherent Light Source (LCLS), LCLS-II uses temperatures colder than deep ...
Companies like Wicked Lasers will sell you a Blu-ray diode laser. But this DIY keychain looks flat-out deadly in this photo, like a mini one-shot pistol of the future ...
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