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Ancient diseases and doctors – History of medicine

By |2017-09-06T17:47:19+00:00September 6th, 2017|Egypt, Science|

Greek doctor letting blood out of a patient because he believes in the four humors Ancient doctors tried to cure everyone who was sick, but they did better with some diseases than with others. Let's look at some common diseases and see what Egyptian, Roman, or Islamic doctors were able to do about them: 1) the common cold virus: [...]

Nuclear fission – Physics

By |2018-05-31T11:49:26+00:00August 17th, 2017|Physics|

Nuclear fission: Atomic bomb explosions make a "mushroom cloud" Fission reactions are the kind of nuclear reaction we use for nuclear power plants and nuclear submarines, and also to set off a nuclear bomb. With fission reactions, you take very large atoms like uranium and plutonium and smash them apart into smaller atoms. Because it takes a [...]

History of tobacco – Tobacco as medicine and money

By |2018-05-30T19:19:04+00:00August 10th, 2017|Economy, North America|

History of tobacco: Tobacco plants growing Early history of tobacco Tobacco is an American plant. Like other flowering plants, it probably evolved during the Triassic era, about 250 million years ago. Tobacco plants are related to tomatoes, peppers, eggplants, and potatoes - and to deadly nightshade. (More about tomatoes) All of these are American plants. [...]

European science – the Enlightenment

By |2017-08-07T21:37:41+00:00August 7th, 2017|Math, Modern Europe, Physics, Science|

Gottfried Leibniz, a German mathematician By 1650 AD, Europeans understood Islamic algebra and trigonometry better. Then they combined that with the exciting invention of the telescope and microscope. Together, these two new things led to a lot more new scientific discoveries. The Wars of Religion also got a lot of people thinking about what they really believed. How could you know for sure? [...]

David Hume – European philosophy

By |2018-04-24T09:15:54+00:00August 6th, 2017|Modern Europe, Philosophy|

David Hume, the European philosopher Soon after Hobbes and Locke died, starting in 1739 AD, David Hume published more important books about philosophy. Hume disagreed with Descartes' idea that people did what their reason or logic told them was best. Hume thought people were more likely to just do what they wanted, even if they knew it was wrong [...]

Napoleon – European History

By |2017-08-05T23:25:31+00:00August 5th, 2017|History, Modern Europe|

Napoleon in 1806 Right after the French Revolution, a lot of people in France were wondering, what sort of government did they really want? People wanted democracy, but on the other hand they were tired of the Revolution killing so many people and not getting much done. A young general, Napoleon, took advantage of the [...]

Early Modern Spain – Philip II

By |2018-09-17T08:09:16+00:00August 5th, 2017|History, Modern Europe|

Philip II of Spain Philip II of Spain As the great-grandson of Isabella, who had sent Columbus to America, Philip II ruled Spain in the mid-1500s AD. Philip also controlled huge Spanish territories in South and Central America, Mexico, Arizona, New Mexico, California, Nevada, Utah, Colorado and Texas. Philip also ruled the Netherlands and Flanders (now part of Belgium), north of France. As [...]

History of Indian medicine

By |2018-09-27T12:21:49+00:00July 22nd, 2017|India, Science|

Indian medicine: the Atharva Veda manuscript: an Indian medical book Early Indian medicine Medicine got an early start in India. Even in the Stone Age, about 5000 BC, dentists at Mehrgahr were drilling people's teeth. They tried to fix people's cavities. That's in the Indus River Valley (now in Pakistan). Where is Mehrgahr? History of medicine The [...]

Doctors and medicine in ancient Egypt

By |2018-10-18T10:29:46+00:00June 19th, 2017|Africa, Egypt, Science|

Ancient Egyptian medicine: Egyptian boys being circumcised, from the tomb of the Vizier Ankhmahor and his wife Mereruka Sixth Dynasty (Old Kingdom, ca. 2300 BC) Best doctors in the Western world Throughout all of antiquity, from the Stone Age to the Islamic period, the doctors of Egypt were the best in the Western [...]