IFLScience:

Perception is a fickle thing. As good as our senses are at keeping us alive, they can often mislead and deceive us. Here’s a great example of that which you can try at home, featured in the new BBC Four series, Colour: The Spectrum of Science.

Check out the video below, follow the instructions and see a black and white image turn into a full-color image of a landscape.

This is really cool. It illustrates an idea I teach in my photography classes about perception and being able to “force” the viewer into seeing what you want them to see.