Reposted by J-M Jacquinot
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J-M Jacquinot
@jmjacquinot.bsky.social
428 followers 353 following 309 posts
Physics teacher, head of physics in a Hertfordshire state funded academy. Enthusiastic cyclist, golfer, tennis player and skier.
![Comic. [Equation [rjf = 2GM / (4.5 m/s)2] with small drawing showing a circle with the radius delineated. On top of the circle there is an arc showing a small frog jumping and landing with RIBBIT and PLOP sound effects.] [caption] More practically useful than the Schwarzschild radius, the *Jumping Frog Radius* is the radius at which an object’s gravitational pull is so strong that even a champion jumping frog can’t escape.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreie7ex2amt4r4e6xhwf2pvxfejdyi6mv56d3hdfha64wjmp3gkltti)