Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The force of a suction cup is calculated using F=AP.
15
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
The sun is 330,330 times larger than the earth.
75
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Hot water can freeze faster than cold water.
181