EXPERIMENTS

• Redi’s Experiment

  ➢ Francesco Redi


  Dead maggots or flies would not

  generate new flies when placed on

  rotting meat in a sealed jar, whereas

  live maggots or flies would. This disproved abiogenesis both the

  existence of some essential

  components in once-living organisms

  and the necessity of fresh air to

  generate life.
• Needham’s Experiment

  ➢ John Needham


  briefly boiling a broth mixture and then

  cooling the mixture in an open

  container to room temperature. Later,

  the flasks would be sealed, and

  microbes would grow a few days later.
• Spallanzani’s Experiment

  ➢ Lazarro Spallanzani


  showed that it is not an inherent

  feature of matter and that it can be

  destroyed by an hour of boiling. He

  proposed that microbes move through

  the air and that they could be killed

  through boiling.
• Pasteur’s Experiment

  ➢ Louis Pasteur


  The pasteurization experiment

  illustrates the fact that the spoilage of

  liquid was caused by particles in the

  air rather than the air itself.