This is a large-scale demonstration of the interaction between period and pendulum length, using 16 bowling balls hung from a wooden frame. The length of time it takes a ball to swing back and forth one time to return to its starting position is dependent on the length of the pendulum, not the mass of the ball. A longer pendulum will take longer to complete one cycle than a shorter pendulum. The lengths of the pendula in this demonstration are all different and were calculated so that in about 2:40, the balls all return to the same position at the same time.
What's likeliest to kill more than 10 million human beings in the next 20 years? It's probably not what you'd think.
More protein than beef, more iron than steak, more Omega-3 than salmon, more calcium than milk and more antioxidants than blueberries.
Entry for a mythbusters contest. Two Phonebooks folded together are inseperable..Or are they?!
Mike Rowe the host of "Dirty Jobs," tells some compelling (and horrifying) real-life job stories
