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Deep math of the folded pizza slice

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Why does a flat pizza slice flop over unless you bend it into a curve? Thank Gaussian curvature, the 19th century mathematical principle that underpins everything from corrugated cardboard to eggshells to Pringles chips.
 Wired's Aatish Bhatia uses the pizza-slice as a jumping-off point to explain one of the most elegant and fascinating parts of geometry, and once you read his work, you'll never be able to look at a curved surface again:
"Well, the pizza slice was flat before you picked it up (in math speak, it has zero Gaussian curvature). Gauss’s remarkable theorem assures us that one direction of the slice must always remain flat — no matter how you bend it, the pizza must retain a trace of its original flatness. When the slice flops over, the flat direction (shown in red below) is pointed sideways, which isn’t helpful for eating it. But by folding the pizza slice sideways, you’re forcing it to become flat in the other direction – the one that points towards your mouth. Theorema egregium, indeed.
By curving a sheet in one direction, you force it to become stiff in the other direction. Once you recognize this idea, you start seeing it everywhere. Look closely at a blade of grass. It’s often folded along its central vein, which adds stiffness and prevents it from flopping over. Engineers frequently use curvature to add strength to structures. In the Zarzuela race track in Madrid, the Spanish structural engineer Eduardo Torroja designed an innovative concrete roof that stretches out from the stadium, covering a large area while remaining just a few inches thick. It’s the pizza trick in disguise
." [ link ]
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Giant Bag Clip

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From websites:
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The Handy Camel is a tight sealing clip and convenient carrying handle for large bags, such as potting soil, fertilizer, pet food, ice salt, bird seed, BBQ charcoal, and more.
Just slide it around the bag's opening, clip it shut, and the round teeth inside securely grip the bag without tearing it, while the ratchet locking system creates a tight spillproof seal.
As handy as this would be for various household projects and pets, it's also great if you have a massive bag of potato chips.

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$11.99.
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When A 6-Pack Of Beer Isn’t Enough, There’s A 99-Pack

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This is the 99-pack of Peacemaker beer available from Austin Beerworks. Austin Beerworks is selling a 99-pack of beer called the Peacemaker, and it’s going for $99, that's about a dollar a beer. It's seven feet long, weighs 82-pounds. It won’t fit in your fridge for instance. And you won’t be able to carry it alone. But hey, it’s a 99-pack of beer, buy 99 beers at once!
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Spider Fangs Pillow

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Tweet Alex Wild:"I can't understand why no one has bought my new, relaxing throw pillow yet. " The story about the picture.
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Pop Up Character Bread, Panda

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Japan's Torune has created a combination bread cutter and mold that forms a piece of bread into an adorable pop-up panda.  Cool
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This Artist Paints With Ice-Cream Instead Of Paint

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Othman Toma(Instagram) an artist from Baghdad, Iraq, has put his watercolor skills to the test by painting with a very unusual “paint”- melted ice-cream. He paints mini masterpieces with different flavors of ice cream and popsicles...
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Velo Sock

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Velo Sock is made of a flexible 90% polyester, 10% spandex material, each sock can fit a bicycle with a length from 1.6 to 2 meters in length. Keep your room clean. Good diea.

3D Street Art: 3D LEGO Street Art

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3D Street Art by Dutch street artist  Leon Keer, at Legoland amusement park. When people stand on footprints and are viewed from a designated point, they appear to be standing next to LEGO minifigs on either side.
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Awesome Mario Wedding Cake

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Super Mario Wedding Cake! Created by Naera of the Netherlands. More pics after more.
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The Supersonic Nazi Rocket Concept Designed to Bomb Any City in 1 Hour

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When WWII ended, American engineers examined a trove of Nazi concepts for rocket-powered weapons and airplanes. One of the most terrifying was Eugen Sänger's antipodal bomber, a manned supersonic plane designed to reach any city on Earth in one hour. Thank heavens it never worked.
 Here's Amy Shira Teitel explaining the terrifying concept:

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Man Dresses In A Suit Made Of Real Chicken Skin

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Artists Victor Ivanov and Lewis Burton had decided to showcase ‘Flesh’ their multi-dimensional art project in the heart of the capital.  The suit of real chicken skin had been literally sewn onto Burton’s body and he wore it as he wandered around, stopping in various places and immediately drawing crowds as he did.
"FLESH is a multi-dimensional art project by artists Victor Ivanov and Lewis G Burton. FLESH is focused on a chicken skin body suit that Ivanov has sewn around Burton’s body from head to toe. FLESH is an experiment that examines the relationship between identity and its commodification through social medias; by creating an entity from chicken skin, a commodified object in itself, the artists are then introducing it into the social sphere, both online and offline.
This abnormality creates a stimulus for the general public to interact with, by allowing them to adopt FLESH as part of their cyber identity. To cement the relationship between the identity that is FLESH and the way it is mediated by cyber culture, the artists are creating a catalogue of FLESH products available to the public. The documented results are then used to create viral material, stimulating the social sphere and allowing it to redefine itself by acting as a platform for dialogue as well as a source of contemporary consumer culture."
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Sushi Socks, look like delicious sushi when rolled up!

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These Sushi Socks look just like delicious sushi when rolled up. Your sock drawer will never be the same! They are also comfortable and durable. The sushi detail is knitted into the sock with colored thread instead of being printed. Seven versions are available: Masuzushi (trout sushi), Shrimp, Octopus, Red Caviar, Tuna, Salmon, and Egg.
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Chameleon Glasses

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The Chameleon Glasses($11) give you the ability to look in different directions, with each eye being independent from the other. You can even look behind you with the included side mirrors.
"See the world like a chameleon using these unique goggles. Rotate the eyes to see in multiple directions and even see behind you using the hidden side mirrors."
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ICON Unveils First Production A5 Aircraft

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Light Sport Aircraft (LSA) manufacturer ICON Aircraft debuted its first production A5 amphibious, folding-wing plane  for the general public. Weighing in at 1510 lb (686.4 kg), the two-seater amphibian is equipped with both a carbon composite waterproof hull and optional retractable landing gear. Its 100 bhp Rotax 912 iS petrol engine gives the aircraft a top speed of 105 kts (120 mph, 194 km/h) and a range of 300 nautical miles (345 mi, 555.6 km).  “The A5 is no longer a prototype or concept aircraft; it’s a sophisticated, production-ready, consumer-focused aircraft. The entire ICON team is pouring its heart and soul into bringing the A5 to our customers, and it shows in the truly exceptional execution of the product. I couldn’t be prouder.” ICON Aircraft Founder and CEO Kirk Hawkins said. The estimated price of the ICON A5 is US$189,000. Timeframe for the official launch of the production A5 to consumers is set for May 2015.
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Nunchops Chopsticks

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Nunchops Chopsticks($8), they are chopsticks linked with a plastic chain like nunchucks. Join two chopsticks together and call them Nun-chops.
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