32 – 23 = 3 – 2
Science & Math
Thunderstruck
Georg Wilhelm Richmann was attending a meeting at the St. Petersburg Academy of Sciences in August 1753 when he heard thunder. He ran home with another man, hoping to record how an insulated rod responded to an electrical storm.
He succeeded, in a way: A ball of lightning leapt from the rod and struck Richmann in the head, killing him instantly and knocking his companion unconscious. That makes Richmann the first person in history to die while conducting electrical experiments.
Joseph Priestley wrote, “It is not given to every electrician to die in so glorious a manner as the justly envied Richmann.” That’s one way to look at it.
Bertrand’s Postulate
Think of a number greater than 1. Double it.
Between these two values is at least one prime number.
Who’s in Charge Here?
“A hen is only an egg’s way of making another egg.” — Samuel Butler
“A zygote is a gamete’s way of producing more gametes. This may be the purpose of the universe.” — Robert Heinlein
“The nucleic acids invented human beings in order to be able to reproduce themselves even on the moon.” — Sol Spiegelman
Math Notes
27 – 1 = 127
Right Side Up
Set a beetle or a turtle on its back and it will right itself.
Remarkably, so will the Gömböc — a mathematical shape that can’t be knocked down. Set it down in any position and it will always “get to its feet”:
Applied Math
Each term in the Fibonacci sequence is derived by adding the two preceding terms:
0, 1, 1, 2, 3, 5, 8, 13, 21 …
Remarkably, you can use successive terms to convert miles to kilometers:
8 miles ≈ 13 kilometers
13 miles ≈ 21 kilometers
This works because the two units stand in the golden ratio (to within 0.5 percent).
Math Notes
(3 + 4)3 = 343
Math Notes
9 + 10 + 11 + 12 = 13 + 14 + 15
Good Advice
“There are two rules for success,” says Raymond Smullyan. “Rule number one: Never tell all you know.”