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Francesco Redi did an experiment relacionated to the meat, he placed the meat in 6 glasses, 2 of them didn't have any protection (maggots appeared), 2 of them were protected (no maggots) and the other 2 were protected with gauze (appeared maggots but not inside), this demonstrates that the maggots appeared for the flies, not from the MEAT. -
He did an experiment, which consisted of boiling broth (with life in it), and after boiling he quickly covered the glass. After waiting he took a drop of the broth and observed where the cells living, and he deduced that the spontaneous generation theory was real, but the problem was that he made a mistake because he didn't boil enough of the broth so he didn't kill all the microorganisms. -
Lazzaro did the same in John's experiment, but, with two glasses, he boiled the two (and this time he boiled much more to kill all the microorganisms) and just one was covered, after waiting he observed that the one that wasn't covered had microorganisms living and the one that was covered not. So this demonstrates that life came from the air not from the inside. -
Louis Pasteur experimented important, he boiled two glasses (each had the neck in the 's' form), and in the middle of the 's' he placed dust with living organisms (which it wasn't making contact with the broth), then he boiled both 1 hour, with one glass he tilted the glass (mixing the dust with the broth), and in a few hours later there were living microorganisms, but on the other one not. So basically he demonstrated that there must be contact with something to 'create' life.
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