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300
Anaximander's Undevelopped Theory
Anaximander though all living organisms were created "in the wet" through the sun. His theory also included humas were orginally a type of fish, slowly maturing to what we are now. -
500
Discovery of Spontaneous Generation
The first human to suggest spontaneous generation was a Turkish writer named Anaximander during the 5th and 6th centuries, who believed everything was created through the universe's elemental nature. -
Aug 11, 1578
William Harvey's Theory
William Harvey rejected spontaenous generation. He said the theory was clearly the dispersion of seeds in the air, creating life. -
Aug 11, 1579
Johannes Baptista van Helmont's Theory
Johannes Baptista van Helmont, a physician and alchemist of the 15th century, believed that mice were created by old rags and wheat kept in a warm temperature inside a closet. -
Spallanzani's Theory and Experiment
Spallanzani's experiment of spontaneous generation consisted of boiling broth in two seperate bowls, one with lid and one without, and finding the reults. After doing the experiment, he found that the bowl without the lid contained living specimens, leading him to the conclusion that microbes move in the air and the only way to kill them is to boil them. -
Pasteur's Theory/Experiment
Louis Pasteur took the ideas of the years before him and expanded the idea. He used different shaped containers and filled them with a broth with more nutriens. After trying Spallanzani's experiment, Pasteur noticed no sign of living specimens inside the container after one year. He then took off the lid of the container and came across living specimens within days, making his theory, life did not arise from non-life, even if exposed to air. -
Aristotle's Theory
Aristotle believed there were 5 elements: Earth, Air, Fire, Water and a fifth element beyond the moon, in heaven, called Quintessence.
