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Cell Theory Timeline
Timeline of the events of the Cell Theory. -
Zacharias Janssen and Hans
In actual practice, there are several lenses used for both the objective and ocular, but the principle is that of two-stage magnification. It is believed that Zacharias Jansen's father, Hans, helped him build the first microscope in 1595. Zacharias wrote to a Dutch diplomat, William Boreel, about the invention. -
Robert Hooke
Robert Hooke, an English scientist, discovered a honeycomb-like structure in a cork slice using a primitive compound microscope. He only saw cell walls as this was dead tissue. He coined the term "cell" for these individual compartments he saw. -
Antony van Leeuwenhoek
Anton van Leeuwenhoek is another scientist who saw these cells soon after Hooke did. He made use of a microscope containing improved lenses that could magnify objects almost 300-fold, or 270x. A while after he found cells, he also found tiny organisms on different objects. Leeuwenhoek named these “animalcules,” which included protozoa and other unicellular organisms, like bacteria. -
Lazzaro Spallanzani
Lazzaro Spallanzani was an Italian Catholic Priest who experimented on the theory that cells came from the division of other cells. He watched a single isolated cell under a microscope and saw it divide into 2 different cells. -
Robert Remak
Robert Remak is a German scientist that is mainly known for his discovery of how cells came to be in the world. His work proved that all cells, no matter what type, always originate from the division of other cells. -
Rudolf Virchow
Rudolf Virchow was the first scientist to accept the work of Robert Remak, who showed that cells can only come from the divison of other cells. He is widely known for his contribution to the Cell Theory, which he based off of Theodor Schwann's work. -
Robert brown
Robert Brown, an English botanist, discovered the nucleus in plant cells. Matthias Jakob Schleiden, a German botanist, proposes that all plant tissues are composed of cells, and that cells are the basic building blocks of all plants. This statement was the first generalized statement about cells. -
Matthias Schlieden
Matthias Schlieden was a German Botanist. He bought a compund microscope, and started to look at different plants under it. While looking at his plants, he discovered that all of his plants were all made up of cells. He also recognized the importance of the cell nucleus, discovered in 1831 by the Scottish botanist Robert Brown, and sensed its connection with cell division. -
Theodor Schwann
In 1838 Matthias Schleiden had stated that plant tissues were composed of cells. Schwann demonstrated the same fact for animal tissues, and in 1839 concluded that all tissues are made up of cells: this laid the foundations for the cell theory. -
Louis Pasteur
Louis Pasteur was a French scientist who was the first scientist to disprove of the spontaneous generation theory. He was the first scientist that was able to prove that all cells come from other cells that divide into different cells.
