The History of the Natural Logarithm - How was it discovered?
10:42
e (Euler's Number) - Numberphile
24:00
History of Calculus: Part 3 - The Historical Motivation
12:47
Logarithms: why do they even exist?
42:32
What is Euler's Number 'e' & Why is it SO Important?
14:58
The Scientist Who Discovered the World's Most Beautiful Equation
16:31
The Blind Mathematician Who Became the World's Greatest
33:25
How people came up with the natural logarithm and the exponential function #SoME1
27:29