Week Fifteen - Quantum Mechanics (Basics)
The basic ideas of quatnum mechanics: de Broglie waves, Stern-Gerlac experiment, Heisenberg uncertainty principle, operators, bra, kets and wave mechanics. Music: “Kite Flying Society” by Mark Mothersbaugh and “In Dreams” by Roy Orbison.
I would like to make a comment about the kite flying society.
Unknow by most of us on the planet, the phenominon of kite flying goes like this:
The lifting energy of all kites is produced by pushing the air downward, the resulting change in momentum producing an force that turns upward.
The reason for this is that the air traveling over the top of the curved surface of the kite is going faster than the air rushing from underneath. Fast-moving air creates less pressure; this means there is more pressure underneath the kite, and this helps to force it upwards.