Investigated magnification by means of curved surfaces
The Ptolemaic theory of the planets was believed to be right for 1400 years until Copernicus suggested that the Sun might be at the centre and not the Earth. Although Copernicus's theory was not correct, is was soon replaced by Kepler's theory which has been supported by further scientific discoveries throughout the 400 years since it was published.
i dont give a dam
seleacus, ptolemy, lysimicus and I forget the fourth.
Facts are known knowledge versus a theory is a statement based on facts which may not be completely true
It is a scientific theory
Theory based on facts.
explain in details the relationships between economics facts, theory and policy.
If it was proven it wouldn't be called a "theory"
A theory is a tested explanation of facts, observations, and natural phenomena
Theory
A Theory
a theory is backed up by facts while a guess isnt.