Did you know?
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
Did you know?
Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
A Split-Brain Experiment
Dynamic Response of Thermometers Experiment
A group of children were asked how many hours a day they spend watching television.
The Taylor–Woods–Hughes experiment
Number line (real numbers)
Davis’s U-tube experiment