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Dunno why this moment makes me smile so much 😂😂

Which mathematical sign was invented in 1577 by Robert Recorde, a Welsh doctor?

Robert Recorde (1512-1558) was a Welsh physician and mathematician who invented the equals sign (=) in 1557. The equals sign looks like two parallel horizontal lines and is a symbol used to indicate equality. In his book, 'The Whetstone of Witte', Recorde explains his design of the "Gemowe lines", which comes from the Latin word "gemellus", meaning "twin lines". The book records, "to avoid the tedious repetition of these words: "is equal to" I will set as I do often in work use, a pair of parallels, or duplicate lines of one length, thus: =, because no 2 things can be more equal."

The = sign can be used in mathematics to ascertain the sum of two numbers, such as "1+2=3". It can also be used in formulas, such as "x=4", or the more complicated,"(x + 1)² = x² + 2x + 1".

Recorde was born in Pembrokeshire, in Wales, but moved to England to study medicine at the University of Oxford. He also studied at the University of Cambridge, before returning to Oxford to teach mathematics. Recorde later moved to London to serve as the physician to King Edward and Queen Mary, to whom he dedicated some of his books. In 1558, Recorde was arrested for debt and died in the King's Bench Prison in Southwark, London, in the summer of that year.

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My first tattoo bitches

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How the equals sign changed the world |

500 years ago, tragic Welsh genius Robert Recorde wanted to teach maths to normal people.

Robert Recorde was one of those people so extraordinarily ahead of his time that he seemed destined to come to a tragic end. In the 16th century, he made advances in economics, medicine, theology, and poetry. But his greatest contribution is taught to every elementary school child, and it arguably laid the groundwork for modern computer science. He invented the equals sign.

(via How the equals sign changed the world | Ars Technica UK)

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