TIL about the Thatcher Illusion

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Here's something cool I learned today that some of you may find fun! This is the quick breakthrough from Wikipedia

It is a phenomenon where it becomes more difficult to detect local feature changes in an upside-down face, despite identical changes being obvious in an upright face.

The phenomenon is named after Margaret Thatcher because it was first illustrated on a photo of hers:

800px-Thatcher_effect (1).jpg credit

Funnily, at first my brain thought the picture was a-ok but now that I have "seen" it I can't unsee it. I even tried it with other photos on Google images, it's like now that I know about it I can't experience it again 😂

Anyways, I could keep paraphrasing wikipedia to give the illusion this is an amazing post but I am too lazy to do that so feel free to visit https://en.wikipedia.org/wiki/Thatcher_effect if you want to learn more!

Posted with STEMGeeks



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17 comments
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WTF... Why I can't keep my eyes away from it.. just Rotating Mobile !LOL that's Interesting.

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(Edited)

I see now how can I unsee it😭😂😂

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It's upside down not that noticeable. But if you turn it opposite, the eyebrows are slightly different. You do need to looking at it closely though !

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Waking up to see this. I thought I didn't see enough.

I have been rotating and rotating my phone.

@olympicdragon you're right I've tried that.

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Hahahhaha, that shit is hilarious! Well I guess politicians' ultimate goal is just to make us laugh every now and then 😂😂
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Muy pero Muy interesante, he visto algunas imágenes que hacen referencia a lo mismo y la ilusión óptica es algo sorprendente, esa conexión entre la vista y nuestro cerebro son algo increíble.

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Lol, that is bloody magic. I cant unsee it now either!

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