The Optical Illusion That Makes Static Lines Look Like They're Pulsing

Gianni Sarcone
Gianni Sarcone

Ready for an optical illusion? This one by artist Gianni Sarcone, which we spotted on Digg, is a pulsating wonder that’s almost guaranteed to trick your mind at first glance.

If you look at the pulsating image below, you likely see the colored lines changing in length. But in reality, the lines never change—only the direction of the arrows do. Based on the Müller-Lyer optical illusion—in which lines appear shorter or longer based on what direction the arrows at their endpoints are facing—the animated illusion consists of 10 lines radiating out from a central point, with arrows set at the midpoint and endpoint of each line. Each line is half red and half blue.

Gianni Sarcone

As part of the animation, the arrows change direction, sometimes facing away from the center of the illustration, and sometimes facing toward it. The arrows of each line move in the opposite direction from one another, so that the middle arrow points toward the center when the arrow at the endpoint points outward, and vice versa.

The Müller-Lyer illusion shows that people perceive a line being longer if the arrow points away from its center, so when the arrows change direction on the animation, it looks like half of the line is getting longer, and half is getting shorter. In reality, though, only the direction the arrows are pointing changes.

You can see other versions of the illusion Sarcone created in different shapes here, and the code he used to create them here.

[h/t Digg]

Save Up to 80 Percent on Furniture, Home Decor, and Appliances During Wayfair's Way Day 2020 Sale

Wayfair
Wayfair

From September 23 to September 24, customers can get as much as 80 percent off home decor, furniture, WFH essentials, kitchen appliances, and more during the Wayfair's Way Day 2020 sale. Additionally, when you buy a select Samsung appliance during the sale, you'll also get a $200 Wayfair gift card once the product ships. Make sure to see all that the Way Day 2020 sale has to offer. These prices won’t last long, so we've also compiled a list of the best deals for your home below.

Rugs

AllModern/Wayfair

- Mistana Hillsby Power Loom Beige Saffron/Teal Rug $49 (save $97)

- Wrought Studios Shuff Abstract Blue Area Rug $100 (save $105)

- All Modern Lydia Southwestern Cream/Charcoal Area Rug $49 (save $100)

- Union Rustic Gunter Power Loom Blue/Khaki Rug $22 (save $38)

- Willa Arlo Interiors Omri Oriental Light Gray/Ivory Area Rug $49 (save $149)

Furniture

Langley Street/Wayfair

- Alwyn Home 14-inch Medium Gel Memory Foam King Mattress $580 (save $1420)

- Andover Mills Pascal Upholstered King Bed Frame $318 (save $832)

- Sol 72 Outdoor 8-Piece Sectional Seating Group with Cushions $650 (save $1180)

- Langley Street Darren 68-Inch Tuxedo Arm Sofa $340 (save $1410)

- Three Posts Tyronza Coffee Table $147 (save $193)

Kitchen

NutriBullet/Wayfair

- Cuisinart 11-Piece Aluminum Non Stick Cookware Set $100 (save $200)

- Rachael Ray Cucina 10-Piece Non-Stick Bakeware Set $92 (save $108)

- NutriBullet Rx Smart 45-Ounce Personal Countertop Blender $124 (save $56)

- Henckels Graphite 13-Piece Knife Block Set $160 (save $340)

- DeLonghi ECP3220 15-Bar Pump Espresso Machine $120 (save $90)

Electronics

Samsung/Wayfair

- Samsung 36-Inch French Door Energy Smart Refrigerator $3600 (save $400)

- Cosmo 30-Inch Freestanding Electric Range Oven $1420 (save $1580)

- Whynter 19-Bottle Single Zone Built-In Wine Refrigerator $380 (save $232)

- bObsweep PetHair Robotic Vacuum Cleaner with Mop Attachment $226 (save $443)

- Rowenta Focus 1700 Iron with Burst of Steam $68 (save $47)

Work From Home Essentials

Foundery Select/Wayfair

- Techi Mobili Adjustable Laptop Cart $50 (save $20)

- Foundry Select Arsenault Farmhouse Desk $210 (save $190)

- Symple Stuff Clay Mesh Task Chair $128 (save $121)

- Three Posts Salina Standard Bookcase $183 (save $617)

- Lorell Hard Floor Chairmat $52 (save $39)

Sign Up Today: Get exclusive deals, product news, reviews, and more with the Mental Floss Smart Shopping newsletter!

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Lindt Opened the World’s Largest Chocolate Museum in Switzerland, Complete With a 30-Foot-Tall Chocolate Fountain

There aren’t any 10-foot strawberries to dip in it, unfortunately.
There aren’t any 10-foot strawberries to dip in it, unfortunately.
Lindt & Sprüngli

Earlier this month, Lindt unveiled its sparkling new chocolate museum—which happens to be the largest chocolate museum in the world—near Zurich, Switzerland. The Lindt Home of Chocolate doesn’t have a Willy Wonka-esque chocolate river, but its nearly 30-foot-tall chocolate fountain is almost as enchanting.

According to Time Out, about 1500 liters of cocoa soup cascade from the golden whisk down to the massive LINDOR truffle and back again. Although you’re only allowed to enjoy it from a distance, you’ll get a chance to sample some of Lindt’s mouth-watering products in the tasting room at the end of the tour. But before that, you’ll find out how the magic happens: There’s a state-of-the-art research plant on the premises, with a production line in full view of visitors.

All LINDOR truffles should be this size.Lindt & Sprüngli

There’s also an exhibition that tracks chocolate through history, revealing how the Swiss became chocolate trailblazers and showing cocoa’s path from plantations in Ghana to factories in Switzerland. Along the way, you might find out a trade secret or two from one of the world’s best chocolate makers.

“The Lindt Home of Chocolate is the home of the renowned Master Chocolatiers, who are now opening their doors and inviting guests to immerse themselves into the fantastical world of chocolate,” the company said in a press release.

All this learning will help you work up an appetite.Lindt & Sprüngli

The project was funded by the Lindt Chocolate Competence Foundation, which seeks to further Switzerland’s confectionery legacy on a global scale.

“The Lindt Home of Chocolate will play an important role in safeguarding Switzerland’s position as a chocolate country in the long-term, as well as contribute to the transfer of knowledge across the entire industry,” Ernst Tanner, president of the Lindt Chocolate Competence Foundation, said in a press release.

The museum will also play an important role in satisfying the sweet tooth of every chocolate lover who waltzes through the doors, as the accompanying Lindt Chocolate Shop is the largest one on Earth.

[h/t Time Out]