The physics of sperm vs. the physics of sperm whales [Science Video]

Traveling is extremely arduous for microscopic sperm — think of a human trying to swim in a pool made of…other humans. We can compare the journey of a sperm to that of a sperm whale by calculating the Reynolds number, a prediction of how fluid will behave, often fluctuating due to size of the swimmer. Aatish Bhatia explores the great (albeit tiny) sperm’s journey.

[TED Ed]

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