Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
If the chemical sodium is dropped into water it will immediately and violently explode.
67
For every gallon of sea water, you get more than a quarter pound of salt.
45
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Pure water (H2O) does not conduct electricity on its own.
46
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
The storage capacity of human brain exceeds 4 Terrabytes.
140