Major Inventions & Discoveries
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The history of the first solar oven capable of melting rocks and metals by a Portuguese Priest awarded with two gold medals and with one silver medal in the 1904 Universal Expo of St. Louis, USA
Math activities really can be fun, if they contain a hands-on component. This math activity shows you how to construct a mariner's quadrant, the type of navigation equipment used by Christopher Columbus, and use the...
A research paper that explores the work of Polish astronomer Nicolaus Copernicus.
This article documents some of the best inventions of the 1990s . Polls, maps, pictures, you tube videos and commentary are n this hub.
Bathing and showering, washing our hands are part of our routine cleanliness habits. We probably have given little thought to its origins in civilization, customs in society or even to the invention of the running...
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