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Sep 26, 1580
Janssen, Hans and Zacharias
-He was the first to invent the compound microscope.
-Janssen is one of three people generally associated with the invention of the telescope in the Netherlands.
-He is the brother of Hans Janssen.
-Zacharias entered himself in secretive trade. -
Redi, Francesco
-Francesco was a doctor.
-Redi attended the University of Pisa.
-He is known for the experiment that dealt with rotting meat and maggots.
-There was a crator on Mars named after him. -
Leeuwenhoek, Anton van
-Anton was the first person to observe living cells.
-He made microscopes that had more precise magnification on the lenses than microscopes made by Robert Hooke.
-He called today's protists, animalcules.
-Anton was able to observe microorganisms. -
Hooke, Robert
-Robert was the first one to observe cork cells with an early microscope.
-He was a member of the Royal Society.
-He studied at Wadham College.
-He investigated refraction, was the first to suggest that matter expands when heated,and suggested that air is made of small particles separated by relatively large distances. -
Needham, John
-John was also a Roman Catholic priest.
-In 1768, he became part of the Royal Soceity.
-He preformed experiments with gravy and tainted wheat in containers.
His experiments showed that there was a life force that made spontaneous generation. -
Spallanzani, Lazzaro
-He discovered and described animal reproduction.
-Lazzaro died from bladder cancer.
-He was an ordained priest.
-At the age of 25, he became professor of logic, metaphysics and Greek. -
Brown, Robert
-Robert made a detailed description of the cell nucleus.
-He was the first to recognize the difference between gymnosperms and angiosperms.
-Brown dropped out of a medical course in 1793.
-He did some early work on plant fertilization and pollination. -
Schleiden, Matthias
-Matthias concluded that all plants were composed of cells.
-He studied plant structure under the microscope.
-Matthias made the first statement of the cell theory.
-He recognized the importance of the nucleus. -
Schwann, Theodor
-Theodor concluded that all animals are made up of cells.
-He invented the term, metabolism.
-Schwann has a statement in the cell theory.
-Theodor observed that the ovum is a single cell that eventually develops into a complete organism. -
Virchow, Rudolph
-Rudolph stated all cells come from other living cells.
-He is also know as the "father of modern pathology".
-Rudolph is considered one of the founders of social medicine.
-He is the first sited to recognize leukemia cells.
