Repeat after me: directional radiation is still subject to inverse square law. | Hacker News

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deepnotderp on Oct 22, 2018 | parent | context | favorite | on: UBeam CEO Meredith Perry steps aside amidst B2B pi...

Repeat after me: directional radiation is still subject to inverse square law.

danielvf on Oct 22, 2018 | [–]

Agreed in the general case, but what about a laser?

Trevor908 on Oct 22, 2018 | [–]

Only in the far field.

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