Mathematics
eulersformulaandthebridgetocomplexexponentials
Quick fact
Euler's identity, e^(iπ) + 1 = 0, is often called the most beautiful equation in mathematics because it links five fundamental constants: e, i, π, 1, and 0.
Why this is interesting
You know how multiplication by -1 rotates you 180° on the number line? Then what if there was a number that rotates you 90°? And what if raising e to that power just spins you around a circle?