This is an optical illusion by Edward H. Adelson who is a Professor of Vision Science at MIT.

Which square is darker – A or B?

The squares marked A and B are exactly the same shade of gray. If you don’t believe the answer, copy the image into your favorite graphics editor and check the colors. Or print the image, cut out the squares and hold them side by side. You’ll see they are identical.

(1 votes, average: 5.00 out of 5)

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Like the “Wash Me” messages scrawled on the back of delivery trucks, reverse graffiti is a method of creating graffiti on walls or other surfaces by removing dirt from a surface. It is usually done by removing dust or dirt with the fingertip(s) from windows or other dirty surfaces. Reverse graffiti on glass or windows can be highly visible due to the reflection of sunlight. Due to the lack of paint it is often considered legal and used for advertising, with companies such as Microsoft and Smirnoff advertising their products this way.

Brazilian artist Alexandre Orion turned one of Sao Paulo’s transport tunnel into a stunning mural. The mural, comprised of a series of skulls, very succinctly reminds drivers of the impact their emissions are having on the planet.

Try as they might, the Brazilian authorities couldn’t find anything to charge him with. The only option they had was to clean the tunnel – but only the parts Alexandre had already cleaned.

After which, the artist continued his campaign on the other side of the street. This put the city officials in a quandary and they decided to take drastic action. Not only did they clean the entire tunnel but also every other tunnel in Sao Paulo.

(2 votes, average: 5.00 out of 5)

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BLU has created an amazing stop-motion animation. Painted on walls in Buenos Aires and Baden, it features a black and white creature that morphs into various blob forms.

MUTO – An ambiguous animation painted on public walls.

I guess they have a different opinion about painting over someone else’s graffiti in Buenos Aires then the do here.

(1 votes, average: 5.00 out of 5)

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Watch as Chris Bliss performs an amazing juggling finale.

The music is a medley of Golden Slumbers/Carry That Weight/The End off of the Abbey Road album by The Beatles. Every time I see this I just have to revisit my Beatles collection.

(1 votes, average: 5.00 out of 5)

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Read more and see another video at the Quirkology Website

(1 votes, average: 5.00 out of 5)

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