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The first compound microscope
Zacharias Jansen invented the first compound microscope during the 1590s. He discovered that if you place a lens at the bottom of a tube, the image of an object appears larger. -
Discovery of photosynthesis
Jan Baptist van Helmont first discovered the process of photosynthesis in the early 1640s, while experimenting with a willow tree. His experiment lasted a total of five years. -
Observation of cells
Robert Hooke was the first person to discover and name cells. He observed a structure of dead cell walls of a cork, under a microscope in the year 1665. -
Observation of single-celled organisms
Anton van Leeuwenhoek reported single-celled organisms--protozoa--through a microscope during the late 1670s. He referred to them as "little-animals." -
Cells - the basic building blocks of life
Lorenz Oken made the statement, "All living organisms originate from and consist of cells." He also stated that cells are the basic building blocks to life during the early 1800s. -
Discovery of the cell nucleus
Robert Brown was the first to discover the nucleus of a cell in 1831. While he was studying glass and rock particles, he came across the discovery of the cell nucleus. -
Cell Theory development
Theodor and Matthias Schwann both worked together to develop the "Cell Theory" in the late 1830s. They stated that all plant and animals organisms are composed of cells, and each cell is identical. -
All living things are made up of cells
Albrecht von Roelliker observed that the sperm and the egg are both composed of cells, therefore proving that all living things are made up of cells from beginning to end. -
Discovery of cellular division
Rudolf Virchow discovered that each and every cell stem forms from another cell. This discovery may help with the information of formation of disease and bacteria. He later on published his famous "Aphorism Omnis Cellula e Cellula." -
Spontaneous Generation is false
Louis Pasteur was the first scientist to prove the theory of "Spontaneous Generation" to be a false source of information. His experiment focused around meat. He placed meat in a few different conditions to observe what he can to prove Spontaneous Generation false.
