Pythagorean Theorem

“In any right triangle the square of the hypotenuse equals the sum of the squares of the legs.” Pythagoras of Samos There are hundreds of demonstrations of this theorem (ES Loomis, cataloged 367 different tests, other authors speak of 1000), … Continue reading

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5 Simple toys with popsicle sticks

Today one of toys for children and adults. (Children with adult supervision, we do not want accidents). It’s a funny little collection of artifacts that we have found in the net and made ​​in a moment, with popsicle sticks, or … Continue reading

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The origins of writing (II). Cuneiform writing.

  One of the earliest types of writing known is the cuneiform. Although Sumerian pictographs come from the late fourth millennium BC these are considered protowriting, since information conveyed by symbols without a linguistic structure. Cuneiform as such is fixed … Continue reading

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The origins of writing (I) The cylinder seal.

The cylinder seals appear in Mesopotamia (Uruk period, 4100-3300 BC). They were small cylinders of stone, glass or other materials, often semi-precious stones, with a carved relief, which making them roll on a clay tablet left recording the motives, as … Continue reading

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Making bracelets with cellulose acetate.

Today I’ll show you how to make a bracelet (or any other accessories) with cellulose acetate as well, I’ll say you a couple of things you should avoid. Cellulose acetate has many applications, such as the photographic negative for movies. … Continue reading

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Playing to be a paleontologist. (Digging your own Ammonites)

Today things are going about paleontology. From very tiny I knew what fossils were because in my house there is a small collection. Nothing about showcases or inaccessible sites, there, at the entrance, where you could hand touch and “study” … Continue reading

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A pot of fairy dust

Since I heard that Tinker Bell was described by Barrie as a fairy who mended pots and kettles, like an actual tinker, I have more sympathy for her and I admit I’ve seen all his movies almost in one day. As we … Continue reading

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Goddess Nammu and the Anunnaki

Sumer was a historical region in the Middle East that formed the southern part of ancient Mesopotamia, between the floodplains of the rivers Euphrates and Tigris. The Sumerian civilization is considered the first and oldest civilization of the world. Although … Continue reading

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