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Zacharias Jansen invents the microscope
Zacharias worked as a spectacle maker along with his father Hans in Middleburg which is located in the Netherlands. The two men had been expirimenting and noticed that when they placed multiple lenses in a tube the object they were looking at appeared slightly larger. They had just created the microscope.
Research site:www.britannica.com -
Jan Baptist van Helmont's theory on photosynthesis.
Helmont knew that plants took light and turned it into energy so he conducted an expiriment. After his expirement he found that his hypothesis was correct and that plants got nuetrients from water not the soil.
Research site:www.discovery.com -
Robert Hooke discovers cells.
Robert Hooke was born on July 18,1635 in England. While examining a piece of cork with a microscope he noticed empty spaces contained be walls. Hooke called theses spaces cells because they reminded him of the cells that monastarys lived in. He is now credited for the discovery of cells.
Research site:www.science-of-aging.com -
Lorenz Oken creates a new animal classification system.
Oken came up with a new way to classify animals that demonstrated the path of evolution. He was also the first person to reconize the signifigance of the cell structure. He said that all living organisms consists of and orginates from cells.
Research site:www.mindat.org -
Brown discovers the cell's nucleus.
While Brown was studing a collection of orchids with his microscope he realized that the cells contained an opaque spot. He first used the term areola to describe these spots. He thought that these spots were key conponents of the cell and called them nucleuses.
Research site:www.brighthub.com -
Schleiden reaconizes the importance of cells.
Schleiden thought that the only way to study plants was with a microscope so that is what he did. During his studys he reconized how important cells were as fudementals of life. He then proposed the cell theory for plants. He knew that cell division had something to do with the cells nucleus but thought that the new cells erupted out of the nucleus.
Research site:www.celltheory.com -
Theodor Schwann applies cell theory to animals.
Theodor Schwann was born in Nuess, Germany in 1810. After graduating college in 1834 he took a job at Berlin antonomy museum. While there he discovered the enzyme pepsin. In 1839 he applied Mattias Schleiden's cell theory to animals and discovers that every mature animal tissue is composed of embryonic cells.
Reasearch site:www.britannica.com -
Rudolf Virchow discovers the celluar basis for many diseases.
Rudolf Virchow is now credited for the understanding of the celluar basis of many diseases, such as cancer. He also discovered that the outside stimuli affected cells, and that diseased cells arise from already diseased cells.
Research site:www.famousscientists.org -
Albrecht von Roelliker discovers mitochondria.
Roelliker revealed the presence of granule-like structures in muscle cells. He was not the person to name the structures mitochondria because he was just the person that discovered them they were later identified by someone else as mitochondria.
Research site:www.whodiscoveredit.com -
Louis Pasteur developes pasteurization.
Pasteur developed a way to kill germs in processed drinks such as milk and alcohol. He called this pasteurization. He did this after the conclusion was made that bacteria causes things to sour. He got rid of the bacteria by heating the liquids to a boil and then letting it cool. These high temperatures would kill the bacteria causing the product to last longer and be healthier. This also eliminated diseases that were caused by the products
Research site:www.biography.com -
Anton van Leeuwenhoek discovers bacteria.
Leeuwenhoek built microscopes and made a very strong one and was able to view single celled organisms, such as bacteria. He also was the first person to view red blood cells in human and animal blood.
Research site:www.smithlifescience.com
