-
Microscopes
Janssen brothers experiment with different sized lenses in a tube. Forerunner of compound microscope. -
Robert Hooke
Made microscope and looked at bark of cork tree. Coined the term "cells" when he saw all of the holes in the tree's bark. -
Francesco Redi
Performs experiment with meat and flies that disproves spontaneous generation. -
Antoni Van Leeuwenhoek
Antoni Van Leewenhoek created a more powerful telescope than Robert Hooke. He discovered bacteria with a microscope that could zoom in 300x. -
John Needham
A naturalist and pastor who exposed soup to air and determined that the microorganisms he found in the soup came from the air. -
Caspar Freidrich Wolff
Comes up with general cell theory. Expanded upon and corrected by his fellow scientists who came later. -
Lazzaro Spallanzani
Biologist who added to the discoveries already found by John Needham. Performed another variation of Needham's soup experiment. -
Franz Bauer
Unequivocally the first person to discover the nucleus. -
Henri Milne-Edwards
Suggests that basic structure of animal tissue is uniform sized "globules". -
Robert Brown
Gave the nucleus its name. Also discovered the random motion of molecules. -
Bartolomy Demortier
Observed binary fission in plants and found a "perfectly clear explanation for the origin and development of cells" -
Henri Dutrochet
Proposed that "the cell constitutes as basic unit of the organized state, everything is ultimately derived from cells." -
Cell Theory
Theodor Schwann and Matthias Schleiden confirm the presence of cells that was proposed almost 200 years earlier. They also formulated the Cell Theory. -
Gregor Mendel
Using new knowledge of microscopes and cells, Mendel was able to experiment genetically with pea plants. Known as the "Father of Modern Genetics" -
Ernest Abbe
Unlike many other microscope inventors and innovators, he was the one who differentiated magnification and clarity, and found the perfect formula for creating microscopes. -
Walther Flemming
Discovers mitosis. -
Period: to
Louis Pasteur
Louis Pasteur becomes interested in microscopy and partners with Robert Koch. Together they study bacteria. -
Carl Zeiss
Carl Zeiss creates commercial microscope with double the magnification of Abbe's microscope. -
Fritz Zernike
Views unstained cells with phase angles of rays. Scoffed at by a scientist who worked at the Zeiss factory. Won Nobel Prize for his discovery. -
Electron Microscope
Much more pwoerful than any microscopes used before. Came a long way from the microscopes first used by Schwann to discovery and prove the cell theory.
