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Science | Physical Science | Nuclear Science

Nuclear science is the study of sub-atomic particles and their application in various disciplines. Here you can learn about nuclear power plants, atomic theory and radiation.

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How does a Crookes' radiometer work?

I once saw this device shaped like a light bulb. It had a vertical support inside it, and on that support there were four vanes with four diamonds on the end. One side of the diamond was black and the other was white. I did a little research and found out that it was called a Crookes' radiometer -- how does it work?


How Nuclear Fusion Reactors Work

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Fusion reactors will use abundant sources of fuel, will not leak radiation above normal background levels, and will produce less radioactive waste than current fission reactors. Learn about this promising power source. See more »

How Atom Smashers Work

 How Atom Smashers Work

Atom smashers are used to help us discover what matter is made of. Learn about atom smashers and find out how an atom smasher works. See more »

How Nuclear Medicine Works

 How Nuclear Medicine Works

Nuclear materials get used in many forms of nuclear medicine -- everything from PET scans to chemotherapy uses them! Learn how nuclear medicine works! See more »

How Nuclear Power Works

 How Nuclear Power Works

Nuclear power provides electricity for a significant percentage of the population. Learn about nuclear fission and take a look inside a nuclear reactor. See more »

How Nuclear Radiation Works

 How Nuclear Radiation Works

Nuclear radiation can be extremely beneficial or extremely harmful -- it all depends on how it's used. Learn what nuclear radiation is all about. See more »

 How does a Crookes' radiometer work?

I once saw this device shaped like a light bulb. It had a vertical support inside it, and on that support there were four vanes with four diamonds on the end. One side of the diamond was black and the other was white. I did a little research and found out that it was called a Crookes' radiometer -- how does it work? See more »

 What is an atomic clock and how does it work?

Learn how time is measured and tracked by an atomic clock. See more »

How Atomic Clocks Work

 How Atomic Clocks Work

Atomic clocks are the most accurate timekeepers in the world. Learn all about atomic clocks and how they keep the whole world on nearly perfect time! See more »