Animations Reveal the Tricks Moving Optical Illusions Play On Your Brain

Even when you know how an optical illusion works, it can be hard to convince your senses that what you're seeing isn't real. The best way to demystify an illusion isn't necessarily to read about it—sometimes, you just need to see the image from a different perspective.

These moving illusions from Lenstore use clever animations to reveal the mechanisms behind their visual trickery. The second image in the slideshow is an Ebbinghaus illusion. As the cluster of blue circles gets bigger, the red circle in the center appears to shrink, and the opposite seems to happen when the blue circles contract. Hit the Reveal button and you'll see that the red circle actually stays the same size the whole time; this is the result of relative size perception.

The third optical illusion shows four sets of lines, with the parallel lines apparently moving back and forth together. In reality, the four lines are all part of the same moving square. The trick behind this illusion is called motion binding: When two sets of objects are in motion in front of you, the movements of one set affect how you perceive the movements of the other. Your brain constructs a pattern for the line movements that doesn't exist.

Once the solutions have been revealed, you may still have trouble reconciling what you see with what you know to be true. But at the very least, turning the illusions off in the moving images below should give your brain a break.

This Course Will Teach You How to Play Guitar Like a Pro for $29

BartekSzewczyk/iStock via Getty Images
BartekSzewczyk/iStock via Getty Images

Be honest: You’ve watched a YouTube video or two in an attempt to learn how to play a song on the guitar. Whether it was through tabs or simply copying whatever you saw on the screen, the fun always ends when friends start throwing out requests for songs you have no idea how to play. So how about you actually learn how to play guitar for real this time?

It’s now possible to learn guitar from home with the Ultimate Beginner to Expert Guitar Lessons Bundle, which is currently on sale for $29. Grab that Gibson, Fender, or whatever you have handy, and learn to strum rhythms from scratch.

The strumming course will teach you how to count beats and rests to turn your hands and fingers into the perfect accompaniment for your own voice or other musicians. Then, you can take things a step further and learn advanced jamming and soloing to riff anytime, anywhere. This course will teach you to improvise across various chords and progressions so you can jump into any jam with something original. You’ll also have the chance to dive deep into the major guitar genres of bluegrass, blues, and jazz. Lessons in jam etiquette, genre history, and how to read music will separate you from a novice player.

This bundle also includes courses in ear training so you can properly identify any relative note, interval, or pitch. That way, you can play along with any song when it comes on, or even understand how to modify it into the key you’d prefer. And when the time comes to perform, be prepared with skilled hammer-ons, pull-offs, slides, bends, trills, vibrato, and fret-tapping. Not only will you learn the basic foundations of guitar, you’ll ultimately be able to develop your own style with the help of these lessons.

The Ultimate Beginner to Expert Guitar Lessons Bundle is discounted for a limited time. Act on this $29 offer now to work on those fingertip calluses and play like a pro.

 

The Ultimate Beginner to Expert Guitar Lessons Bundle - $29

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How the Trapper Keeper Trapped the Hearts of '80s and '90s Kids

Courtesy of Cinzia Reale-Castello
Courtesy of Cinzia Reale-Castello

No matter when or where you grew up, back-to-school shopping typically revolved around two things: clothing and school supplies. And if you’re an adult of a certain age, you probably had a Trapper Keeper on that latter list of must-buy items.

Like the stickers, skins, and cases that adorn your smartphones and laptops today, Trapper Keepers were a way for kids to express their individual personalities. The three-ring binders dominated classrooms in the '80s and '90s, and featured a vast array of designs—from colorful Lisa Frank illustrations to photos of cool cars and popular celebrities—that allowed kids to customize their organizational tools. 

In this episode of "Throwback," we're ripping open the Velcro cover and digging into the history of the Trapper Keeper. You can watch the full episode below.

Be sure to head here and subscribe so you don't miss an episode of "Throwback," where we explore the fascinating stories behind some of the greatest toys and trends from your childhood.