Our Newest Labs, Activities & CoolStuff
Simple Model of How the Sky Changes Color at Sunset
The Sunset Egg is a fun and engaging demonstration on the science of light. The egg is made of “opalescent” glass. This refers to the way it looks different at different viewing angles (similar to the gem’s properties).
An oil-polished Sunset Egg, lit from below, shows both blue sky and yellow sun.
To use the egg [...]
Conceptual Physics on Vimeo!Now you can watch any of Paul Hewitt's Lectures from the Conceptual Physics Alive video series on Vimeo. Rent or Buy digital versions of the entire series. Check out this short 3.5 minute trailer showcasing some of the best demos from the 34 episode series.
Newspaper Radiation! [W/Video]
Radiation is the transfer of thermal energy using electromangetic waves, which includes visible light, infrared radiation, ultraviolet radiation, x-rays and microwaves and radio waves. A camera flash is designed to give off a whole lot of visible light in a short amount of time. The black ink in the newspaper absorbs this radiation and increases [...]
The Blue-Violet Laser
The wavelength you've been missing!
Take a look at the new blue-violet Laser, which produces wavelengths at 405 nm. Sure, it is a different color and that is always cool, but why use this over any other Laser?