Career break on your CV? Still no idea where you want to go in 10 years? How do you answer such questions in a job interview? Here you can test yourself and pick up tips and tricks for your interview.
A race can be simulated with (many) LEDs alone. Two people compete against each other and try to "drive" their vehicle to the finish line first by pressing a button as quickly as possible.
Every body emits heat radiation, which we can visualize using an infrared camera. This answers questions such as: "Am I a cold or warm nose?" or "Where can a mouse hide from a snake?"