Nuclear physics – fission and fusion
Atomic bomb explosions make a "mushroom cloud" - this is a fission reaction Nuclear physics is the process of getting energy from the nucleus of an atom. There are two ways to release [...]
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08, 2017
17
08, 2017
Newton’s Laws of Motion – Movement – Physics
Light takes years to reach us from these stars far away in space. When solid objects move through space, they follow certain rules that let us predict how they will act. We call [...]
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08, 2017
Newton’s Second Law of Motion project
Gravity is an important cause of acceleration Newton's Second Law of Motion tells us that force equals mass times acceleration. You can try this out for yourself. Here's a website with [...]
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08, 2017
Building a radio – a physics project
The graphite inside your pencil There's nothing magic about a radio. You can build your own radio out of plain ordinary things you can get at the store. Here's how. [...]
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08, 2017
What is a battery? Electricity
A Leyden Jar - an early kind of electric battery In the early 1800s AD, about 200 years ago, scientists in Denmark and Britain figured out another way to make magnets. [...]
16
08, 2017
Ancient philosophy: ethics, fate, and science
Weighing the souls of the dead Philosophy means the love of wisdom. But what does that mean? It's hard to separate philosophy from religion. And it's also hard to draw a [...]
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08, 2017
Epicurean philosophy – ancient Greece
A statue of the philosopher Epicurus, carved later, long after he died - Epicurean philosophy When did Epicurus live? Another philosophical group which developed in the Hellenistic period, around the same time as [...]
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08, 2017
What is a midwife? History of childbirth
A Roman carving of a midwife at a birth (Isola Della Sacra, Ostia, 1st century AD) Who delivered babies in the ancient world? A midwife is a woman who helps [...]
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08, 2017
Oil – American science
A homemade oil lamp Oil is a kind of liquid made out of hydrocarbon molecules. It is mostly fat. Lots of plants and animals make oil. In North America, people got most of their oil from salmon, bison, and sunflowers. [...]
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08, 2017
Early Native American science
Native American science: Sunflowers growing in a field Domesticating sunflowers Probably the greatest contribution of Native American people to science before 1500 AD was the domestication of several plants, especially sunflowers in eastern North America. These plants [...]
