Summary
Even in a pool, water is a wave field—every stroke makes ripples. At certain speeds, those waves can align to help rather than hinder, subtly changing drag.
Switching language...
Please wait
Summary
Even in a pool, water is a wave field—every stroke makes ripples. At certain speeds, those waves can align to help rather than hinder, subtly changing drag.
Skydivers reach approximately 200 km/h terminal velocity in free fall.
Why does tennis go 15-30-40 instead of 1-2-3? It’s linked to old habits of marking points like quarter-hours, with 45 shortened into 40 for practicality.
Goalkeeper Asmir Begovic scored from his own penalty area to the opposite goal in 2013. Wind helped, ball bounced in.
Chess was born in India in the 6th century AD as "Chaturanga" and spread worldwide.
The same ball ‘dies’ on grass, pops on hardwood, slides on clay. Bounce is set by the ball+surface pair—elasticity and friction—and that sets the speed of the game.
42.195 km sounds scientific, but its story is cultural. The distance grew from start/finish preferences in one event, then became standard—ceremony shaped the math.
Expand your knowledge with new facts, interesting trivia and useful content every day!
Discover All Info