What is a gear ratio? And how do gears help make the bicycle so efficient?
What are the best materials for frames? What are the best designs?
How do you stop and steer a bicycle? What forces keep the bicycle from falling over?
How does drafting help a cyclist? What is skin friction?
Why is the bicycle the most efficient way to travel? Explore bicycle science and culture.
Learn about bike gears using thread spools and a rubber band.
A bicycle, masking tape, paper, pencil, and a little curiosity are all you need to find out how the gears of a bicycle work.
Explore the important engineering concepts of yield strength, ultimate strength, and elasticity as they relate to building a better bicycle.
Find out about bicycle brakes and balance, and calculate your stopping distance on a bicycle.
When you ride a bike in a straight line, you must make many minor corrections in order to stay upright.
Are you quick enough to hit a 90 mph fastball?
Baseball pushes the limits of human biology.
See what makes a home run.
How can something as light as air slow down a hit?
When you pick up a baseball, it immediately suggests its purpose: to be thrown fast and with considerable accuracy.
In the 1870s, an American woman could not vote. She could not own property in her own name after marriage. But she could play ball. . .