Can You Figure Out This Newly Discovered Optical Illusion?

Kohske Takahashi, i-Perception (2017)
Kohske Takahashi, i-Perception (2017)

Ready to have your mind boggled? Take a look at the image above. What shape are the lines? Do they look like curves, or zigzags?

The image, spotted by Digg, is a new type of optical illusion published in the aptly named journal i-Perception. Discovered by Japanese psychologist Kohske Takahashi, it’s called the “curvature blindness illusion,” because—spoiler—the contrast of the lines against the gray background makes our eye see some of the lines as zigzags when, in fact, they’re all smooth curves.

The illusion relies on a few different factors, according to the three experiments Takahashi conducted. For it to work, the lines have to change contrast just at or after the peak of the curve, reversing the contrast against the background. You’ll notice that the zigzags only appear against the gray section of the background, and even against that gray background, not every line looks angled. The lines that look curvy change contrast midway between the peaks and the valleys of the line, whereas the lines that look like they contain sharp angles change contrast right at the peak and valley. The curve has to be relatively gentle, too.

Go ahead, stare at it for a while.

[h/t Digg]

Now You Can Wear Your Favorite Dunkin' Coffee Flavor as Nail Polish

Dunkin'
Dunkin'

Dunkin'—the coffee chain formerly known as Dunkin' Donuts—is getting into the beauty business. For a limited time, nail polish inspired by Dunkin's flavored coffees will be available at select nail salons across the country.

The nail polish line includes eight freshly brewed shades. Three pay homage to Dunkin's new signature lattes—cocoa mocha, caramel craze, and blueberry crisp—and three are inspired by the seasonal Baskin-Robbins ice cream-flavored coffees: butter pecan, pistachio almond fudge, and banana split. Nail polishes in Dunkin's iconic pink and orange color palette are also available.

The collection is a collaboration between Dunkin' and the vegan-friendly nail polish company Lauren B. Beauty. While supplies last, the products will be available at certain nail salons in 10 cities where Dunkin' operates, including Los Angeles, Chicago, Atlanta, and Boston. Each purchase of the branded nail polish comes with a $3 Dunkin' gift card. To see if a salon in your area is participating, check out the map below.

Dunkin' isn't the first fast food chain to release its own nail polish line. In 2016, KFC released edible "finger-licking" nail polish that, yes, tasted like chicken.

Australian Family Walking Dog Named Lucky Discovers $24,000 Gold Nugget

iStock.com/scyther5
iStock.com/scyther5

An Australian dog named Lucky has lived up to his name. As the Bendigo Advertiser reports, a family from Bendigo in Victoria were walking their pet on May 12 when they literally stumbled upon a hunk of rock resembling gold on the ground. Experts have confirmed that the 20-ounce nugget is indeed gold, and in its intact state it's worth an estimated $24,000.

A father and his two daughters—who wish to remain anonymous—were taking their dog Lucky for a morning walk when one of the girls hit something with her foot. She noticed it wasn't an ordinary rock, and asked her Dad if it might be gold. He suspected it was and took their find to a nearby supermarket to weigh it on the deli scale.

Weighing over a pound, the gold nugget could earn the family a small fortune if they wish to sell it. The father says he does plan to find a buyer eventually; he had been struggling financially, and he told the Bendigo Advertiser the lucky event "couldn't be better timing."

The family has decided to keep the location of the discovery a secret. They plan to go for more walks in the area in hopes of striking gold twice.

[h/t Bendigo Advertiser]

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