Using his microscopes, Leeuwenhoek reported the first discovery of protists (he called infusoria) in 1674 and bacteria (he described as “little animals” or animalcules) in 1783. He also observed the vacuole inside the cells, mobility of sperms, and the banded pattern on muscular fibers....
History of the Microscope During that historic period known as the Renaissance, after the "dark" Middle Ages, there occurred the inventions of printing, gunpowder and the mariner's compass, followed by the discovery of America. Equally remarkable was the invention of the light microscope: an inst...
Nobel Prize, any of the prizes (five in number until 1969, when a sixth was added) that are awarded annually from a fund bequeathed for that purpose by the Swedish inventor and industrialist Alfred Nobel. The Nobel Prizes are widely regarded as the most prestigious awards given for ...
Nearly two hundred years later, Leeuwenhoek's discovery of microbes helped French chemist and biologist Louis Pasteur to develop his “theory of disease”. This concept suggested that disease originates from tiny organisms attacking and weakening the body. Pasteur’s theory later helped doctors to ...
William Harvey’s discovery of the circulation of the blood, for instance, was based partly on Fabricius’s detailed descriptions of the venous valves. Microscopic anatomy The new application of magnifying glasses and compound microscopes to biological studies in the second half of the 17th century ...
Hello, everyone. I am Rose. Today I will show you the history of microscopes. The microscope is used to magnify tiny objects into instruments that can be seen by human eyes. Microscopes are divided into optical microscopes and electron microscopes. ...
Although often amusing to many modern biologists, serious scientific debate surrounded preformationism until the late 1700s.Peering through early light microscopes, some naturalists believed they could see entire miniature humans elegantly packaged into sperm and eggs. According to theory, once fertilized...
The Cell Theory Discovery of cells. The Cell Theory The development and refinement of magnifying lenses and light microscopes made the observation and. Microscopes History, Parts, and Usage. History of the Microscope Anton van Leeuwenhoek (mid 1600s) –“father of microscopy” –looked at water ...
the electromagnetic theory of light propagation proposed by Maxwell in 1865, Einstein’s theory of the photoelectric effect in 1905 and of the embedding of light in cosmology through general relativity in 1915, and the discovery of the cosmic microwave background by Penzias and Wilson in 1965, ...
who labeled the theory epigenesis; the German physician Caspar Friedrick Wolff; and the Prussian-Estonian scientist Karl Ernst,Ritter von Baer, who proved epigenesis with his discovery of the mammalian ovum (egg) in 1827. Other pioneers were the French scientistsPierre BelonandMarie-François-Xavie...