Day 15

Great quote

Dirac Equation description on Wikipedia

Tunneling through a barrier

Heisenberg Uncertainty Principle

Mathematica input:

Plot[Cos[0.9 x] + Cos[0.95 x] + Cos[x] + Cos[1.05 x] + Cos[1.1 x], {x, -70, 70}, PlotRange → {-10, 10}]