Tag: general knowledge

I was an ancient Greek mathematician and mystic. I had a colorful, if somewhat obscure, early life in the eastern Mediterranean before I founded a religious and philosophical society in Croton based around mathematics. I swore all of my followers to strict secrecy, so it SHOCKS me that anything leaked out. Now everyone knows me for a little theorem about right triangles. I didn't even discover it; the Babylonians beat me to it by 1000 years. Who am I?

I was a Medieval mathematician. I was born in Pisa, but I grew up in North Africa, where I was exposed to the vast scientific and mathematical knowledge of the East. I was famous in my time for writing a book called the "Liber Abbaci," which introduced the decimal system to Europe and described how to do basic arithmetic with it. This was also the first time anyone in Europe had ever used a symbol for the number zero! However, you probably know me best for the series of numbers that begins 0, 1, 1, 2, 3, 5... I didn't invent it; I just borrowed it for a problem in my "Liber Abbaci." Who am I?

I was a 19th century German chemist. I was the first to synthesize isobutyric acid, guanide, creatine, creatinine, and tyrosine. I also discovered an important rule about alcohols, which is named after me. But that's not what my name makes most people think of! It's the clever flask I invented! And I bet they can't even remember my full name, much less spell it right. Who am I?