In these videos, astronomy and physics experts at the University of Nottingham explain the strange symbols, letters, and "squiggles" seen in equations and diagrams in textbooks and other materials. Enjoy lively discussions, simple demonstrations, and humorous anecdotes as these scientists share their years of experience, demonstrate scientific concepts and discuss what humans have yet to uncover in our universe. Topics covered include our Solar System's planets, the speed of light, polarization, the magic square, the number pi, entropy, and Planck's constant.

 courtesy of netTrekker