SHELDON: It’s possible a unicorn used the Big Bang. But without evidence, I might as well believe my Newton’s cradle is frictionless. Which it isn’t. Because the universe is cruel.
SHELDON: (to himself) Coefficient of restitution: 0.95. Air resistance: negligible. Angle of incidence: precisely 15 degrees. This will be the most efficient Newton’s cradle in East Texas. young sheldon s04e17 1080p
MISSY: He’s been up since 5 a.m. talking about “elastic collisions.” I think he’s trying to build a weapon. SHELDON: It’s possible a unicorn used the Big Bang
SHELDON: Impossible. Friction has betrayed me. young sheldon s04e17 1080p