Topic: optical illusions

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You Can’t See This (Mind Tricks)

Our brains and eyes aren't always showing us everything that's available to see. Instead, learning, memory, and expectation changes our vision to fit as much as we can comprehend in any given moment. In this AsapScien...

Yosemite’s Horsetail ‘firefall’ at sunset

Filmed on February 15th, 2016, a brilliant sunset illuminates the white mist and spray of Yosemite National Park's Horsetail Fall with bright oranges and reds. Called a 'firefall', the name for this optical illusion "...

Triply Ambiguous Object by Kokichi Sugihara

Continuing his highly-regarded work in the illusion community, artist and mathematician Kokichi Sugihara won the 2018 Best Illusion of the Year award for his Triply Ambiguous Object. The piece includes a paper with an...

Three quirky sleight of hand illusions by Richard Wiseman

From former magician/current author and British psychologist Richard Wiseman, watch Assumptions, a 2012 short promotional video from his psychology-based Quirkology YouTube channel. Below, enjoy The Tube of Mystery an...

The Writing’s on the Wall – OK Go

A four-minute, epic one-take video that adds to their highly ambitious visual collection of music, this is OK Go's The Writing's on the Wall. The series of forced perspective and anamorphic illusions, with a few gravi...

The Reversing Arrow Illusion: An amazing & easy trick for all ages

We just tried this super easy Reversing Arrow Illusion, and it is, in fact, super easy. Draw two left-pointing arrows on a piece of paper and then put a clear, empty glass between you and thos...

The praxinoscope

This is a praxinoscope. It was invented in France in 1877 by Charles-Émile Reynaud. Like the zoetrope, it used a strip of pictures placed around the inner surface of a spinning cylinder. The praxinoscope improved...

The Phonotrope (formerly the Phonographantasmascope)

This video (which picks up at about 40 seconds) is by the fascinating Jim Le Fevre,” a BAFTA and British Animation Award winning free-lance film maker mostly working in animation” who experiments with (wha...

The Moon Illusion – TED Ed

Why does the full moon look larger when it’s near the horizon than when it’s high up in the sky? For generations, astronomers, psychologists, brain researchers, and many others ha...

The Moon Illusion – AsapScience

"Wow the moon looks huge tonight!" We’ve all said it, but is the moon ever larger or closer at the horizon? (No, it’s not.) Is it some visual magnification by the atmosphere? (Nop...

The Mephisto Spiral – Part magic trick, part optical illusion

Watch as Grand Illusions' Hendrik Ball deftly showcases The Mephisto Spiral, a brain-breaking toy that seems to mix an optical illusion with a bit of the slight-of-hand skills required for magic tricks: It looks li...

The making of a praxinoscope animated music video

Created, drawn and colored by the director David Wilson, this “how to” about the making of a music video is an excellent primer for how the praxinoscope works. Watch more videos with optical toys.

The Hidden Chairs

Which way is the chair facing? Watch the Dezeen video above and see if you've guessed correctly. The black lacquered plywood chair, one of three designed by French design studio Ibride, references furniture design fro...

The footstep illusion & more optical tricks

...four squares, two of them light yellow and two of them dark blue, move horizontally at constant speed across stationary, vertical black and white stripes. Each square has the same width as two stripes, so that its ...

The Crazy Circle Illusion – How are these dots moving?

In this Brusspup mind-bender, you may think you see a circle of eight white dots rotating around the inside of a larger red circle, but you're actually witnessing something else, and you may not believe it unless you ...

The Bicycle Animation: Live animation on a bicycle wheel

Bicycle wheel animation by Katy Beveridge.

The ‘magic’ of invisibility lenses

Using lenses to bend light, YouTuber Brusspup makes a ruler, a knife, a spoon, a hand, and a laser completely disappear from view. Invisibility lenses create the illusion, an optical trick based on The Rochester Cloak...

Scanimated Optical Illusion

YouTube’s Brusspup specializes in optical illusion videos that are inspired by the animation concepts in the book Magic Moving Images, and in scanimation books like Gallop!. In this video,...

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