Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
One cubic foot of gold weighs more than 1,200 pounds!
78
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Diamonds can be shattered with a hammer.
-104
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57