﻿ May 23 | This day in history
This Day In History
Wednesday, July 15, 2020
On This Day


in 1829

Accordion patent granted to...
Accordion patent granted to Cyrill Demian in Vienna. The accordion is a box-shaped musical instrument of the bellows-driven free-reed aerophone family, sometimes colloquially referred to as a squeezebox. A person who plays the accordion is called an accordionist.
accordion, Cyrill Demian, Vienna


in 1883
Douglas Fairbanks

Douglas Fairbanks, Sr. was an American actor, screenwriter, director and producer. He was best known for his swashbuckling roles in silent films such as «The Thief of Bagdad», «Robin Hood», and «The Mark of Zorro».


in 1857
Augustin-Louis Cauchy

Baron Augustin-Louis Cauchy was a French mathematician who was an early pioneer of analysis. He started the project of formulating and proving the theorems of infinitesimal calculus in a rigorous manner, rejecting the heuristic principle of the generality of algebra exploited by earlier authors.