This is also how "whiter than white" detergent works. | Hacker News

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		wongarsu on Dec 28, 2019 \| parent \| context \| favorite \| on: Why tennis balls are yellow or green This is also how "whiter than white" detergent works.

kevin_thibedeau on Dec 28, 2019 [–]

And why bees will sometimes harass people that look too much like a tasty flower.

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