WANT: Periodic Belt and Wallet Set

WANT: Periodic Belt and Wallet Set

This set of periodic belt and wallet set from Thinkgeek is periodically useful! This canvas wallet and belt set will help you remember the symbols for Astatine, Phosphorus, Cesium, Barium, Lead, Hydrogen, Lithium, Titanium, Aluminum, Fluorine, Helium, Beryllium, Argon, Nickel, Calcium, Potassium, Bromine, Indium, Carbon, Silver, Xenon, Radium, Francium, Radon, Gold, Sulfur, Gallium, Chlorine, Neon, […]

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The Physics of How Lawn Mower Blades Cut Grass (at 50,000 FRAMES PER SECOND)

The Physics of How Lawn Mower Blades Cut Grass (at 50,000 FRAMES PER SECOND)

You know how scissors work? Two opposing blades close on a surface and create shear stress on a localized area, cutting the surface in the process. A lawnmower blade is different: Just a massive and rather dull blade with a lot of inertia going around a fixed axis. How can such a blade cut grass […]

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Chemtrails, Or More Accurately, Contrails, Explained [Science Video]

Chemtrails, Or More Accurately, Contrails, Explained [Science Video]

This week the “Reactions” Youtube channel is taking science to the skies and checking out the chemistry behind chemtrails, or more accurately, contrails, for condensation trails. It’s easy to look at the white trail behind a jet aircraft and imagine all manner of chemicals raining down from above. However, airplane contrails are simply what happens […]

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A Look at Why Do We Hiccup [Science Video]

A Look at Why Do We Hiccup [Science Video]

The longest recorded case of hiccups lasted for 68 years … and was caused by a falling hog. While that level of severity is extremely uncommon, most of us are no stranger to an occasional case of the hiccups. But what causes these ‘hics’ in the first place? John Cameron takes us into the diaphragm […]

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