2300 years ago, observed the natural world, asked questions with REASONING. He said the "vital" forced brought maggots from non living things.
Experiment: covered and uncovered jars with meat. Controlled: jars, meat, location, temp. Manipulated: gauze cover. Responding: whether maggots appear or not.
|What was Redi's conclusion?||
Spontaneous generation of maggots did not occur.
|What is spontaneous generation?||
Life could arise from non- living matter
Took flasks, boiled gravy( to take out microorganisms). Supported Redi's conclusion.
Same as spallazani, but with curved flask!
|What was Pasteur's impact?||
|When are experiments not possible?||
1. In humane or against laws 2. Impossible 3. Bad/ incorrect hypothesis
|What is a Theory?||
Numerous investigations with same results, well tested and unified. Although not set in stone.