Beating your Guitar into Tune
If you have any musical friends, this should get their attention (if it doesn’t, just spill petrol over their musical instruments and ignite. THAT will).
Basic trigonometry tells us that the rule for adding two sines is as follows:
It turns out that if our ear is exposed to two sounds which have similar frequencies, it only […]
An Energy Conservation Puzzle
Here’s a puzzle that makes lots of experienced physicists pause for a moment - or two!
Suppose you have a cart at the top of an inclined hill. Initially, the cart only has potential energy, equal to mgh. As it descends to the bottom of the mountain, its potential energy is converted into kinetic energy, […]