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Be Amazing: Glow in the Dark

Whether you're looking to become invisible, swallow a sword, quit smoking, find Atlantis, get out of jury duty, buy the Moon, sink a battleship, perform your own surgeries, or become a ninja, our new book Be Amazing covers all the essential life skills! This week, we'll be excerpting a few lessons from the book.

YOU WILL NEED

"¢ 1 hand (your own, preferably attached)
"¢ 1 set of fingernails
"¢ 1 powerful photon counter (check your local university research laboratory)
"¢ Photons (don't sweat it, you've already got those)

Do It Because: IT'S ALREADY THERE

Some kids want to be princesses or mermaids. But we always thought it'd be fun to be a firefly. (Not the "hey, your tush is blinking on and off" part, mind you, more just the general glowing.) Turns out, we've always been closer to our dream than we realized. In 2005, researchers at Japan's Hamamatsu Photonics Central Research Laboratory revealed that humans already do glow in the dark. Our hands, feet, and foreheads all shine, thanks to photons—tiny, energized packets of light emitted by our skin. According to a Discovery News article on the study, researchers say that fingernails release the most photons, possibly because the material they're made of can function like a prism, scattering light far and wide. So how's it work? The researchers aren't entirely sure. However, using some hand models and a photon counter, they figured out that warm temperatures, increased oxygen, and mineral oil all increase the photon output—making it likely that the glow is caused by chemiluminescence (a fancy word that simply means "light caused by chemical reactions"). Coincidentally, this is same process that makes those firefly fannies flicker.

Use It To: ATTRACT POTENTIAL MATES, ENTERTAIN YOUR FRIENDS. . . AND HELP OUT YOUR DOCTOR

Besides grade-school wish fulfillment and some serious potential for party tricks, there are actually some practical benefits to this knowledge. Both the Japanese researchers and a second team in Germany say that disease and illness may affect the glow. The Japanese say that sick people emit a dimmer light, while German studies on multiple sclerosis patients revealed that the disease seemed to change the rhythm at which the photon light pulsed. The teams hope that one day their discovery could be used to help doctors diagnose specific disorders in a less invasive way.

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Food
Hate Red M&M's? You Need a Candy Color-Sorting Machine
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iStock

You don’t have to be a demanding rock star to live a life without brown M&M's or purple Skittles—all you need is some engineering know-how and a little bit of free time.

Mechanical engineering student Willem Pennings created a machine that can take small pieces of candy—like M&M's, Skittles, Reese’s Pieces, etc.—and sort them by color into individual piles. All Pennings needs to do is pour the candy into the top funnel; from there, the machine separates the candy—around two pieces per second—and dispenses all of it into smaller bowls at the bottom designated for each variety.

The color identification is performed with an RGB sensor that takes “optical measurements” of candy pieces of equal dimensions. There are limitations, though, as Pennings revealed in a Reddit Q&A: “I wouldn't be able to use this machine for peanut M&M's, since the sizes vary so much.”

The entire building process lasted from May through December 2016, and included the actual conceptualization, 3D printing (which was outsourced), and construction. The entire project was detailed on Pennings’s website and Reddit's DIY page.

With all of the motors, circuitry, and hardware that went into it, Pennings’s machine is likely too ambitious of a task for the average candy aficionado. So until a machine like this hits the open market, you're probably stuck buying bags of single-colored M&M’s in bulk online or sorting all of the candy out yourself the old fashioned way.

To see Pennings’s machine in action, check out the video below:

[h/t Refinery 29]

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