•Alchemists – used spells and magic formulas to try to change one substance into another substance.

•Relied on religious teachings and the works of classical Greek and Roman thinkers to explain the mysteries of nature•Aristotle

•Favored a system of scientific experimentation•Alchemy•Wonderful Teacher

Renaissance??

•Encouraged curiosity, investigation, and discovery

• People began using experiments and mathematics to understand the natural world

•Question ancient beliefs•Three new tools–Scientific instruments (telescope, microscope, barometer), –mathematics–experiments

• Method of inquiry that includes carefully conducted experiments and mathematical calculations to verify the results of experiments

Ptolemy

•Earth center of universe•Geocentric Theory – Earth-centered•Not part of Scientific Revolution

•Heliocentric Theory – Sun center of the Universe

•Astronomy

•Both Confirmed Copernicus’ view •Kepler used mathematics•Galileo – telescope – Rings around Saturn

Isaac Newton

• Law of universal gravitation – all bodies attract each other

Andreas Vesalius

•Flemish Scientist who studied anatomy – human body

•Studied circulation of the blood•The Heart

Rene Descartes• Discourse on Method (1637)

–Stated that all assumptions had to be proven on the basis of known facts

–Only ideas that could be proven true beyond all doubt “I think, therefore I am”

•Most important change was that people now practiced forming conclusions based on REPEATED EXPERIMENTS