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Hans and Zacharias Jansen
Produced the first compound microscope by combining two convex lenses with a tube. It was focused by sliding the tubes. It was able to magnify 3x the human eye. Many people believe his father helped him make it. Around a year later they were involved in making the single lens optical microscope. This was able for up too 9x the human eye -
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Christian Ambrose Cell TImeline
Cell theory -
Robert Hooke
First person to examine non-living cells inside a cork and found the cellular compostition. Along with that he introduced the word cell to science that he based off of the cells that monks lived in. Although he never found the true biological function of cells with his findings. He had a microscope that created magnifications of 50x. Then went on to publish a book related to cells which sparked the cell theory. -
Anton Van Leeuwenhoek
Leeuwenhoek improved magnifictation of moicroscopes by polishing lenses. Leeuwenhoek was later on able to use the prestige microscope to observe bacteria. His microscope was up too 270x in magnification. Although it was much simpiler compared to the ones used in that time. -
Anton van Leeuwenhoek
Leeuwenhoek was also first to come upon single celled organisms. It took a while but his findings were accepted by the Royal Society of London. Amimalcules became the name at first. It was then know that these organisms were named protozoa. Which were found while he was examing his saliva. -
Robert Brown
In 1833, Robert was examing plants through a microscope. Upon doing this it turns out he found the nucleus in a plant cell. He was the first to find it. At this time people didn't even think plants and animals cell both have nucleus's. -
Matthias Schleiden
Discovered plants were made up of cells.He also found the importance of the cell nucleus, such as finding its purposes. Also found a correlation with the cell division. But had the wrong guess of how it worked. -
Theodor Schwann
He discovered that animals were made up of cells. He said that all animals and plants are made of one single fundamental unit. Then showed that all mature animal tissue is made up of embryonic cells. He than discovered pepsin, first digestive enzyme from animal tissue. -
Rudolph Virchow
He stated that all living things come from other living things. He than stated that not all plants are made of cells. That led to 3rd part the cell theory. He also said diseased cells come from healthy ones. -
Gregor Mendel
Shared his findings of plant hybrids. He also found that some traits in offspring appear without any blending of parent characteristics. Along with that he found patterns from inheritance from generations. From working on pea plants he found the laws of inheritance. -
Anton Schneider
He described chromosomes during cell division. He also looked into what chromosomes did during mitosis. This led to him being the first to describe the process in animal cells. This effected the cell theory.
