The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
Sickled and normal red blood cells
Average Normal Blood Pressure Readings
(A) Normal glomerulus and (B) acute glomerulonephritis.