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A comment on The Tiny Ultrabright Laser That Can Melt Steel. Parent comment

Re:The Tiny Ultrabright Laser That Can Melt Steel by dtgriscom on Monday April 15, 2024 @05:53PM (#40046109)
> 100 micrometers thick

1/10 of a millimeter. Thick foil (perhaps 4x generic Al foil).

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