BLACK FRIDAY SALE - All T-Shirts $14.95 + Get Free Worldwide Shipping
Nov 28 - Nov 30, 2014: The lowest price we'll have all year - Get yours today!

These Cars Are The Same Size

Psychologist Richard Wiseman of Quirky Mind Stuff posted this perspective illusion in his blog and told us that the cars are the same size. Despite that, our mind stubbornly believes that the car on top are larger - much larger, maybe almost twice the size - of the car at the bottom.

How can this be?

You're looking at a great example of the Ponzo Illusion, which was first demonstrated by Italian psychologist Mario Ponzo in 1911. Ponzo suggested that the way we judge an object's size is highly dependent on its background.

Indeed, you can take a ruler and measure the heights of the three cars (or check out the crude animated GIF below that I whipped out to show the effect) - but even after you *know* that the cars are of the same size, your brain simply refuses to see it that way.


Newest 5
Newest 5 Comments

Yes, of course, but that's the optical illusion: even though the cars are the same size in the image, they look progressively larger because of the role of the background image.

Three cars of the same size parked that way in actual life wouldn't look like they're of different sizes because the car furthest away would be smaller (pixel-wise).
Abusive comment hidden. (Show it anyway.)
I know the original author came up with the title, but it's rather misleading. Pixel-wise, the cars are indeed the same size because they are Photoshopped copies. Three real cars of the same model/size parked that way would look more natural to us.

Still a neat effect.
Abusive comment hidden. (Show it anyway.)
Commenting is closed.

We hope you like this article!
Please help us grow by sharing:

Get Updates In Your Inbox

Free weekly emails, plus get access
to subscriber-only prizes.

We won't share your email. You can cancel at any time.
Email This Post to a Friend
"These Cars Are The Same Size"

Separate multiple emails with a comma. Limit 5.

 

Success! Your email has been sent!

close window
neat stories? Like us on Facebook!
Close: I already like you guys!