-
Light Mcroscope
The first light microscope was invented by Zacharias Jansen in 1595, using two lenses and collapsable tubes, almost like a reverse telescope. It was not until 1670 when Antony van Leeuwenhoek invented a single lense light microscope. Robert Hooke made a model simlar to Leeuwenhoeks, simply adding an illuminator and focus adjustments -
Robert Hooke
He published his first book "Micrographia". The book features his first discoveries of a cell when he saw a cell through a peice of cork bark. He saw the cell wall through the thin slice of cork and saw many similarities in wood and plant cells. -
Antonie van Leewenhoek
Antonie van Leewenhoek was a scientist from Deltf, Netherlands. He decided to dig deeper into Robert Hookes book, Micrographia. He then created his very own "microscope", really a very powerful magnifying glass. -
Matthias Schleiden
Schleiden had always enjoyed to study plant structure under a microscope. While he was still professor of botany at the University of Jena, he wrote “Contributions to Phytogenesis” where he worte about how he discovered that the different parts of the plant are mad up of cells or derivatives of cells. He also addressed the importance of the cell nucleus. -
Theodor Schwann
Schwann was a professor of anatomy at the University of Leuven in Belgium. He branched off of Schliendens discoveries and then dicovered that cells also remained in animals. He found this out by checking out the animal tissue under a microscope. -
Cell Theory
The cell theory, started by Theodor Schwann, Matthias Schleiden, and Rudolph Virchow in 1858, states that: 1.All living organisms are composed of cells. They may be unicellular or multicellular. 2.The cell is the basic unit of life. 3.Cells arise from pre-existing cells. http://biology.about.com/od/biologydictionary/g/celltheory.htm -
Rudolf Virchow
Virchow studied medicine at the military academy of Prussia. He realized that only parts of the body get sick, not the whole body. This is now the law ofomnis cellula e cellula (“every cell is from another cell”). He also discovered the disease Leukiemia. -
Ernst Abbe
Ernst formulated mathematical theory that correlated with the resolution to the wavelength of light. -
Electron Microsope
Ernst Ruska invented the first electron micrscope, which uses a beam of electrons to make out a much better picture of the specimen in finer detail than a light mircroscope. -
Watson and Crick
In 1963, Watson and Crick discovered that there is DNA, deoxyribonucleic acid, in every cell in our body.
