Critical incident angle and total internal reflection. Created by Sal Khan.
Alpha, Beta, Gamma Decay and Positron Emission. Created by Sal Khan.
An introduction to Virtual Image. Created by Sal Khan.
Sal introduces the notion of moving fluids and laminar flow. Then he uses the incompressibility of a liquid to show that the volume flow rate (flux) must remain constant. Sal then derives the equation of continuity in terms of the area and speed. Created by Sal Khan.
Writing nuclear equations for alpha, beta, and gamma decay. Created by Jay.
Let's derive a formula that relates all the variables in Young's double slit experiment. Created by David SantoPietro.
We can see interference in action if we shine laser light through two slits onto a screen. Created by David SantoPietro.
An example problem involving a double slit experiment. Created by David SantoPietro.
Introduction to the vector dot product. Created by Sal Khan.