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A comment on With a simple piece of paper, engineers create self-powered, wireless keyboard. Parent comment

Re:With a simple piece of paper, engineers create self-power... by notassigned on Sunday September 06, 2020 @10:06PM (#24396103)
What is the equation for this again?
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Re:With a simple piece of paper, engineers create self-power... by sfgweilr4f on Monday September 07, 2020 @01:17AM (#24396769)
Pi.Z.Z=A

For a circular area of Humor with radius Z. Best served fresh.

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