|
Author Question: Claudius Ptolemy created an elaborate geometrical and mathematical model to explain details of the ... (Read 20 times) |
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.