where did the math symbol pi come from
Pi The symbol used by mathematicians to represent the ratio of a circle's circumference to its diameter is the lowercase Greek letter π, sometimes spelled out as pi, and derived from the first letter of the Greek word perimetros, meaning circumference.[7] In English, π is pronounced as "pie" (/paɪ/, paɪ).[8] In mathematical use, the lowercase letter π (or π in sans-serif font) is distinguished from its capitalized and enlarged counterpart ∏, which denotes a product of a sequence, analogous to how ∑ denotes summation.
Tony! Toni! Toné! Originally, the band went by "Tony, Toni, TonÃ©" as a joke, until they realized it had a nice ring to it.[1]
Frances Fisher Frances Louise Fisher[1] (born 11 May 1952)[2] is a British-American actress.
Fleming's right-hand rule These mnemonics are named after British engineer John Ambrose Fleming, who invented them.