Minutephysics talks about the “Mountain or Valley?” illusion – a visual distortion that can happen when we look at 3D objects (or illustrations of 3D objects) from an overhead view. It shows how much we rely on shadows to perceive our world.
Portuguese muralist Odeith loves to make what he calls “sombre 3D” – graffiti that looks like it’s popping out of the wall. He’s so great at emulating shadows and often extends his paintings to the floor to enhance the effect.
OK Go has set the bar pretty damned high for their music videos, and their new long-take clip is true to form. For The Writing’s on the Wall, the band created a funhouse filled with illusions which disintegrate as the camera moves.