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YouTube / HedgehogTH
YouTube / HedgehogTH

Playing With Magnets in a Copper Pipe

YouTube / HedgehogTH
YouTube / HedgehogTH

In this video, we see what happens when you drop powerful neodymium magnets through a short length of thick copper pipe, demonstrating Lenz's law. Long science story short: the magnets fall very slowly. The effect is really neat, and the video very simple (it's just one shot of a guy dropping magnets through a pipe...), but don't try this at home. Fooling around with strong magnets can hurt you. Fortunately, we have dudes on the Internet who'll do it for us:

(Via Devour.)

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A Tour of the New York Academy of Medicine's Rare Book Room
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The Rare Book Room at the New York Academy of Medicine documents the evolution of our medical knowledge. Its books and artifacts are as bizarre as they are fascinating. Read more here.

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Even in Real Time, the Northern Lights Look Like a Beautiful Timelapse Video
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Nothing compares to seeing the Northern Lights in person, but this video shared by The Kid Should See This is a pretty decent substitute. Though it may look like a timelapse, the footage hasn’t been altered or sped up at all. The undulating green lights you see below are what the aurora borealis looks like in real time.

Astro-photographer Kwon O Chul captured the footage of the meteorological phenomenon in Canada’s Northwest Territories in March 2013. The setting, the Aurora Village in Yellowknife, is a popular destination for tourists coming to see the Northern Lights up close. In the video, you can see how the camp’s glowing teepees complement the colorful ribbon of lights above.

Even if you plan your Northern Lights sightseeing trip perfectly, it’s impossible to guarantee that you’ll get a clear view of the aurora borealis on any given night, since factors like solar activity and weather conditions affect the light show’s visibility. But if you want to know what to expect when the lights are at their peak, take a look at the clip below.

You can check out more of Kwon O Chul's photography on Facebook.

[h/t The Kid Should See This]

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