This '3D' Crosswalk Uses an Optical Illusion to Slow Drivers

Crosswalks are meant to tell drivers to yield to pedestrians, but too often they're treated as a suggestion rather than a rule. If the possibility of hitting someone isn't enough to slow speeding drivers, two artists from Gujarat, India are hoping this sneaky optical illusion will do the trick.

As WIRED reports, Shakuntala Pandya and daughter Saumya Pandya Thakkar have teamed up to redesign the classic white-striped crosswalk to look like roadblocks jutting up from the street. To drivers on the highway in the west Indian city of Ahmedabad, the shapes will look like three-dimensional structures from far away. But the artists say the illusion fades as cars get closer, so it shouldn't lead to any motorists slamming on their breaks to avoid crashing into something that isn't there. 

Highway officials have experimented with similar 3D crosswalks designs here in the states. A few years ago, the Oklahoma Department of Transportation transformed the plain white blocks of one crosswalk by painting brightly colored shapes around them to give them the illusion of being raised from the rest of the street. Parts of Chicago have also featured eye-catching 3D markings since the beginning of the decade. There's still no comprehensive research about whether these designs are actually effective. But in India, a country where traffic-related deaths are on the rise, experimenting with safer road signage can't hurt. 

[h/t WIRED]

Header/banner images via Twitter.

The New iPhone 11 Is Triggering People With Trypophobia

Justin Sullivan/Getty Images
Justin Sullivan/Getty Images

People with trypophobia, or a fear of clusters of small holes, know which triggers to avoid. Soap bubbles, lotus seed pods, and the insides of cantaloupes can all induce panic and revulsion in people who are sensitive to the pattern. Now, they have a new item to add to their list. As Gizmodo points out, the new iPhone has a design feature that's turning off trypophobes.

Apple debuted the iPhone 11 at an event on September 10 ahead of its release on September 20. This latest model comes with many upgrades, including a super-powered processor and longer battery life, but the biggest change has been met with a mixed reception.

The iPhone 11 Pro has three camera lenses where there would normally be one. People who prefer Apple's sleek, minimalist style have criticized the design, while those with trypophobia have had even stronger reactions. Some scientists think the fear of clusters of holes originally developed as a survival mechanism to steer people away from infectious diseases. When someone gets nauseous at the sight of three cameras grouped on the back of a smart phone, it's because it reminds them of decaying flesh.

Presentation launching iPhone 11.
Justin Sullivan/Getty Images

The iPhone likely looks the way it does today thanks to another highly specific fear that afflicted Steve Jobs. The Apple founder suffered from koumpounophobia, or a fear of buttons—an incredibly rare phobia that's only been documented once in all of psychiatric literature. His fear may have lead to the popularization of the smooth, buttonless touch screen. It also explains why the tech giant preferred black turtlenecks to button-down shirts.

Though similar to trypophobia, a fear of buttons and fear of clusters of circles aren't quite the same thing. So while triggering to many, the updated iPhone doesn't necessarily conflict with Jobs's original design aesthetic.

[h/t Gizmodo]

The Reason Why Ships Are Often Painted Red on the Bottom

75tiks/iStock via Getty Images
75tiks/iStock via Getty Images

If you’ve ever salvaged a sea vessel, you might have noticed that ship hulls are often red. If you haven’t dealt with a shipwreck—and chances are you haven’t—you may have still seen a red hull in pictures or in partial view at a shipyard. Since that portion of the ship is below the waterline, it seems strange to opt for a specific color.

The reason is tradition. And worms.

In a piece for Jalopnik, Andrew P. Collins explains that early sailing ships protected themselves against barnacles and wood-eating worms by covering their hulls in a copper or copper oxide paint that acted as a biocide. The copper gave the paint a red tint. By reducing the muck that naturally collects on the hull, ships can maintain their structural integrity and avoid being weighed down by gunk like seaweed that would reduce drag.

These days, biocides can be mixed with virtually any color of paint. But the hulls are often painted red to maintain a nautical tradition. Collins also points out that the red may help observers gauge the load of a ship’s cargo. The more weight on board, the lower in the water it will be. That's why you often see numbers positioned vertically on the side of the hull.

No matter what’s covering the hull, it’s never going to completely eliminate growth. Often, ports will prohibit ship owners from scraping hulls while docked, since ships traveling in outside waters might have picked up a non-native species of weed that could prove problematic in a new environment.

[h/t Jalopnik]

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