And if shaking your head really fast is, er, problematic, you can also just look at an angle or move away from the screen until the image appears.
Here's an Instructable on how to make your own head-shaking illusions.
(via r/interestingasfuck)
/
/
12:26 pm Tue
Jan 1, 2019
Shake your head to see this image
Cool optical illusion - this diamond shape appears to move
By changing the luminance around the edges of the diamond and the background, you can make it look as though the diamond is moving up, down, right, or left. From a paper in i-Perception titled, “The Perpetual Diamond: Contrast Reversals Along Thin Edges Create the Appearance of Motion in Objects.” by Oliver J. Flynn and […]
READ THE REST
Brilliant pet adoption posters
Indian animal adoption campaign World for All commissioned these excellent posters in 2017 to promote the cause. [via]
READ THE REST
How to easily draw a fantastic optical illusion of a 3D city
As a high school student, I would have enjoyed learning to use ruled paper to draw anamorphic illusions instead of (not) taking notes. (via The Kid Should See This)
READ THE REST
This bundle teaches you how to market on LinkedIn, Facebook, Instagram, & more
Theoretically, there’s never been an easier time for marketers. The ubiquity of social media means a good word – or a good brand – can spread like wildfire with very little effort. But as limitless as the internet is, there’s a lot of competition and noise to contend with. And the vast graveyard of failed […]
READ THE REST
Over those AirPods? Here are 10 pairs of earbuds that bring the noise
They might be the shiny new thing, but AirPods aren’t for everybody. Maybe you’re looking for a new sound or you understandably lost those tiny buds during a brisk run. If so, here’s 10 headphones and earbuds that break out of the Apple mode with a return to quality and wearability. Klipsch R5 Bluetooth Neckband […]
READ THE REST
This top-rated password manager helps keeps your logins secure
When it comes to passwords, there’s no such thing as paranoia. You want them secure and complex, and you definitely don’t want to repeat them on all your accounts. The trouble is, the internet seems to keep growing. And so do those accounts. Just one lockout from an important email or banking site is enough […]
