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Physics Facts

Fission and Fusion

In the nuclear fission process, a heavy atomic nucleus spontaneously splits apart, releasing energy and an energetic particle, and forms two smaller atomic nuclei. While this is a normal, natural ... Continue reading

What Is An Atom?

Atoms are the extremely small particles of which we, and everything around us, are made. A single element, such as oxygen, is made up of similar atoms. Different elements, such as oxygen, carbon, and ... Continue reading

Why Does A Golf Ball Have Dimples?

A golf ball can be driven great distances down the fairway. How is this possible? The answer to this question can be found by looking at the aerodynamic drag on a sphere without dimples (while it's ... Continue reading

Golf Ball

The Physics of Sandcastles

Give a plastic bucket and a shovel to a child, then turn her loose on a beach full of sand. She'll happily toil the day away building the sandcastle to end all sandcastles. It's pure fun. It's also ... Continue reading

So much going on in a grain of sand.