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Emil Pop
Lives in Toronto
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Emil Pop

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Summary: Open source does not provide a meaningful inherent security benefit for OpenSSL and it may actually discourage some important testing techniques. Also, panhandling is not a good business model for important software like OpenSSL.
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Emil Pop

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There's a significant segment of the population for whom this post's headline makes zero sense, so allow us to explain: Civilization V is a video game that
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What you're seeing here is a neodynium magnet falling through a copper tube, though it falls very slowly for as long as it is in the tube. Since the magnet is moving within the copper tube, an electric current is formed. With the formation of this electric current, a magnetic field is also formed that starts to attract the magnet.

The magnet falls straight through the tube without attaching to the inside of the tube because the electric current and magnetic field that are being made are equally distributed within the tube. This means that the magnet feels equally attractive forces from all directions, so it doesn't stick to just one area inside the tube.

The magnetic field within the copper tube does slow the magnet's fall but it wouldn't stop the magnet from falling all the way through. This is because without having the magnet moving inside the tube, there wouldn't be any electric current (Eddy Current), which would also result in the lack of any magnetic field, causing the magnet to start falling again. While the magnet is inside the copper tube, even though it is falling and not physically attached to the insides of the tube, the tube as a whole will feel heavier. The total mass of the system doesn't change, but the weight does.

The Eddy current inducing effect that the neodynium magnet has mainly has to do with Lenz's Law. Wikipedia describes Lenz's law as, "An induced electromotive force (emf) always gives rise to a current whose magnetic field opposes the original change in magnetic flux." It's an explanation to how electromagnets follow Newton's 3rd Law and the Law of Conservation of Energy.

Videos of the experiment and a short explanation of Lenz's law here: http://www.geekosystem.com/neodymium-magnets-copper-pipes/

Short YouTube video of what's going on here: Copper Pipe Magnet
 
Same YouTube video with an explanation of the demonstration: http://www.neatorama.com/2011/08/09/neodynium-magnets-fall-slowly-through-copper-pipe/#!Aa9wQ
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Install or Uninstall a Swimming Pool at the Push of a Button

Read article → http://www.industrytap.com/install-uninstall-swimming-pool-push-button/18581
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Emil Pop

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Was a long wait too!
 
Frustration with USB cable orientation will be a thing of the past
The most abundant connector standard in technology, the Universal Serial Bus, is getting ready for its most revolutionary change yet with a new specification that will be finalized in July of this...
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Impressive Thai Military Parade
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How to sing 'Hey Jude'!
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Have him in circles
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Horia Petrusan's profile photo
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