Optical Illusion: Remember those boards with weird patterns that used to also have hidden objects? The whole point of those boards used to be about how fast one can figure out what the image was! Well ...

This optical illusion challenges you to find the hidden strawberry among watermelons. This is a real-time test of your ...

Researchers have developed a way to use high-frequency electromagnetic waves to visualize objects that are hidden from view – such as a tool in a pile of junk or a vase in a cardboard box – with much ...