Illusion

[The Blade Dancer]

Dang that's cool. Hope I'll be good enough for that one day.

[The Blade Dancer]

Hey did you guys know you can customize your profile image, username, and profile banner? Also how do I get reputation?

[placidmacaw 0]

You click on your own image and it sends you to your settings

[placidmacaw 0]

@po is the illusion called the checker-shadow illusion?

[debbie]

@placidmacaw-0 Yes, according to Wikipedia!

[debbie]

@TSS-Graviser I just gave you reputation. Click on the "up" arrow next to the word "Quote"

[placidmacaw 0]

@debbie is there going to be a live stream on sunday?

[debbie]

@placidmacaw-0 It's going to be on Saturday, Feb. 29th, at 2 p.m. (EST Eastern Time) Prof. Loh will do it from his laptop all the way in Romania!

[placidmacaw 0]

ok So for me I'm in china, I will have to wake up in the morning to watch it!

[debbie]

@placidmacaw-0 He's taking the U.S. team to the Romanian Master of Mathematics Competition, which they did not badly at last year!

[po]

Looking forward to talking to you!

[The Blade Dancer]

Ooh yay thanks @debbie for the upvote.

[RZ923]

@po Thanks for such a cool illusion! I never expected that A and B are the same. It’s amazing how our brain can trick us that much.

[divinedolphin]

5 months ago: "Thanks for the upvote!"
Now: me: upvotes almost everything lol

[amiabletiger]

@po yeah, it's a cool illusion, but how do you tell whether the shade of grey is different or not? Is it just a coincidence and you can use some kind of computer program that breaks the color down to a mix of yellow, blue, and red so you can check if it's the same? Or can you calculate the shadiness of B using the intensity of the light and the density and thickness of the cylinder and then make A the same?
Just wanted to know....curiousity...unstoppable...

[The Blade Dancer]

There's actually a video might be embedded within one of these posts if you put it into a color analyzer they're the same

[divinedolphin]

If you screenshot square A and square B separately, and copy-paste it into like google docs, you can see that they are actually the same.

[amiabletiger]

@The-Blade-Dancer @divinedolphin Oh wow, I'll try both ways!

[The Blade Dancer]

Apparently no embedded video but google search works just as well

[RZ923]

A similar illusion: