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American science after colonization

By |2018-04-08T11:21:58+00:00September 28th, 2017|Americas, Native American, North America, Science|

European trade goods (thanks to Nebraska Game and Parks Division) North American people made rapid scientific advances in the course of the 1500s AD, inspired by contacts with traders and explorers from Europe. People learned how to tame horses and ride them, and they learned how to use guns. They also began to use a [...]

The human body in medieval and modern science

By |2018-04-25T17:09:55+00:00September 6th, 2017|Biology, Science|

Chinese drawing of the organs (about 1200) Between the Middle Ages and modern times, doctors have learned a lot of new things about how human bodies work. The Islamic doctor Al-Tabari, in the early 800s, learned that light bounces off objects into your eyes. Al-Tabari's student Al Razi figured out that a fever is your body's way of fighting illness, not [...]

History of Electricity – Science of shocks

By |2017-09-05T08:39:33+00:00September 5th, 2017|Science|

A bolt of lightning in the sky Like other inventions, electricity took thousands of years to develop, as scientists all over the world investigated first one idea and then another. Scientists grouped together unseen forces - both magnetism and electricity - and tried to figure out whether these forces were inside the attractor, [...]

What makes thunder and lightning? – Weather science

By |2018-04-24T15:20:20+00:00August 20th, 2017|Physics|

A bolt of lightning in the sky Hot air and cold air are constantly moving around the Earth, as the hot air rises and the cold air sinks - that's what makes wind. Sometimes as this airmoves around, it gets more exciting than just wind, though. A thunderstorm begins when the wind picks up a lot of water from the [...]

Building a radio – a physics project

By |2018-05-31T11:49:23+00:00August 16th, 2017|Physics|

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. You'll need a detector, to pick the audio frequencies out of a radio wave. You'll need an earphone, to hear the radio with. [...]

What are magnets? Physics and electricity

By |2018-05-31T11:49:22+00:00August 16th, 2017|Physics|

A magnet holding a steel bar Magnetism is a force created by electricity, or more specifically by electrons. In any iron atom, there are 26 electrons. Each electron has a tiny bit of negative charge. The way these electrons behave is impossible for us to imagine, because it's not like anything we can see. But we can [...]

What is electricity? Physics

By |2018-06-01T10:27:39+00:00August 16th, 2017|Physics|

What is electricity? A bolt of lightning in the sky What is electricity made of? Everything in the universe is made of atoms.  Those atoms are made of electricity. Atoms are made of even smaller particles called protons, neutrons, and electrons. Electricity is electrons that have gotten loose from their atom. (More about electrons) The protons and neutrons [...]

Electromagnets – electricity and magnets

By |2018-05-31T11:49:20+00:00August 16th, 2017|History|

An electromagnet from inside a stereo speaker In the early 1800s AD, about 200 years ago, scientists in Denmark and Britain figured out another way to make magnets. This way you didn't need a lodestone. You could also make much stronger magnets. And you could turn the magnets on and off. The new way [...]