Hooke microscope

The History of the Cell Theory

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    Aristotle's Discoveries

    Aristotle was known for his experimental approach and numerous dissections. He was drawn to animal classification in order to discover aspects of connection between the soul and the human body. Some of his animal classifications still stand today. One of his famous thoughts is a foreshadowing of Mendelian genetic concepts
  • The Creation

    The Creation
    Janssen is credited with the creation of the first truly compound microscope.
  • Pneumatic Chemistry

    Pneumatic Chemistry
    Jan Baptist van Helmont was believed to be the "founder of pneumatic chemistry." He conducted a five year experiment on plant growth and introduced to word "gas" into the vocabulary of scientists everywhere.
  • Hooke's Contributions

    His adult life comprised three distinct periods: as a scientific inquirer lacking money; achieving great wealth and standing through his reputation for hard work and scrupulous honesty following the great fire of 1666, but eventually becoming ill and party to jealous intellectual disputes
  • Microbiology and Improving the Microscope

    Antonie van Leeuwenhoek, the Father of Microbiology, comes up with an improved microscope.
  • Grundriss der Naturphilosophie, der Theorie der Sinne, mit der darauf gegründeten Classification der Thiere

    This was the first book in a series by Lorenz Oken that established him as a leader in the movement of "Naturphilosophie" in Germany.
  • Early Detailed Description of Cells

    Robert Brown, a Scottish botanist, was among the first to describe the cells nucleus in detail. He also was also the first to observe the Brownian Motion and was the first to recognize the difference between gymnosperms and angiosperms.
  • Matthias' Study of Medicine

    Matthias studied in medicine, but he mainly focused on plant anatomy.
  • Theodor Schwann's Attributions

    Theodor Schwann's Attributions
    Theodor Schwann helped develop the Cell Theory. One contribution is the discovery of Schwann cells in the peripheral nervous system. He discovered pepsin, made discoveries of the organic nature of yeast, and invented the term 'metabolism.'
  • Development

    Roelliker became a proffesor of physiology and studied in the development of higher animals.
  • The First Vaccine

    Louis became a proffesor in chemistry. In 1879 he made his first vaccine discovery called chicken cholera.
  • Cellular Pathology

    Robert Virchow discovered Cytopathology.