Word: invare
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...inch, and can be programmed in three dimensions. According to Farkas, it helps “when you’re trying to measure the speed of light to 18 decimal places.” Farkas is making a small assembly for a rotating laser mount out of Invar, a metal that resists the expansion and contraction associated with laser research. He invites FM to take the digital mill for a spin. “Just lower the bit five thousandths of an inch and press the button,” he instructs. The hot lubricant launches nano-specks...
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