Broomfield Public Library
An afternoon of Hands-On Science, October 22, 2005.
As a conclusion to the Einstein Centennial Celebration in October of 2005, the Broomfield Public Library hosted a hands-on science day. We discussed some basic ideas in physics like conservation of mass and energy and had a good time launching projectiles from a miniature catapult among other experiments. There was a magnetism lab, demonstration of Brownian motion in a microscope, and in the back kitchen we added spare electrons to some gold foil and knocked them free again using ultraviolet light and a galvanized nail, a process known as the photoelectric effect.
Verification that mass is conserved...
Energy and massive projectiles.
Photoelectric effect, light as waves, light as particles, light as energy.
Some creative, imaginative, inquisitive humans.