Mathematics
Euler's Formula and the Unity of Exponential and Trigonometric Functions
Quick fact
Euler's formula, e^(iπ) = -1, links the most important constants in mathematics (e, i, π, 1, and 0) into a single, surprising statement, often called the most beautiful equation in mathematics.
Why this is interesting
You know that multiplication and rotation seem like different operations, but what if they were actually the same? What if the exponential function, the master of growth, could also describe the rhythm of a circle?