Post something cool from the Internet -2018

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How to know your cat is fully charged....

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"If people can't control their own emotions, then they have to start trying to control other people's behaviour."
 
Real-time, 10 seconds. This is some truly epic use of super slow-mo. If you have seven minutes to spare, don't take your eyes off Alan. Crank that volume, get chills, feel your pulse race, fear that your screen might very well melt under the intensity.... (R.I.P. Mr. Rickman)
 
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RADIOACTIVITY LIVE!
In this short movie, you can watch radioactivity in action thanks to a cloud chamber, a plastic box cooled to –30 °C and filled with isopropyl alcohol vapor. For this demonstration, Julien Simon placed a 0.3-cm³ lump of a radioactive uranium-containing mineral called uraninite inside the chamber. α-Particles and β-particles—the two kinds of radiation given off by uranium-235 and uranium-238—hurdle through the chamber, hitting the alcohol molecules floating around. Because the particles are charged, they rip electrons off or add electrons to the alcohol molecules. This in turn gives the molecules a charge, which then makes them attract noncharged molecules around them. When the molecules bunch together, they make visible white clouds that trace the paths of the ejected particles. α-Particles produce straight, thick clouds, while β-particles create longer, more erratic ones.
Credit: Julien Simon
Chemistry in Pictures — RADIOACTIVITY LIVE! In this short movie, you can...
 
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