Developing Cell Theory

Timeline created by nbrekelman in History

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Event Date:	Event Title:	Event Description:
01/01/1590	First Microscope	Hans and Zacharias Janssen were the inventors of the first compound microscope.
01/01/1665	Robert Hooke	Robert Hooke looked at a sliver of cork through a microscope lens and noticed some "pores" or "cells" in it. He was the first person to use the word "cell" to identify the small box like structures when he was describing cork
01/01/1774	Antony van Leeuwenhoek	Antony van Leeuwenhoek described observations on lake water, including a description of the green charophyte alga Spirogyra.He also improved the microscope.
01/01/1831	Robert Brown	Robert Brown discovered the cell nucleus
01/01/1838	Matthias Jakob Schleiden	Matthias Schleiden stated that the different parts of the plant organism are composed of cells. He also recognized the importance of the cell nucleus, discovered in 1831 by the Robert Brown connected it with cell division.
01/01/1839	Theodor Schwann	Theodor Schwann extended Schleiden's cell theory to animals, stating that all living things are composed of cells. He also believed that new cells form outside pre-existing cells.
01/01/1839	Cell theory	Matthias Schleiden, Theodor Schwann and Rudolf Virchow were the co-founders of cell theory. Cell theory is the ideas that all living matter consists of cells, cells are the basic unit of structure of all living things and all cells come from preexisting cells.
01/01/1858	Rudolf Virchow	Rudolf Virchow proposed an important extension of cell theory that "All living cells arise from pre-existing cells".
01/01/1886	Richard Altman	Richard Altman identified the mitochondria using a dye technique, and called them "bioblasts"
01/01/1931	Electron Microscope	Germans, Max Knoll and Ernst Ruska co-invented the electron microscope. Electron microscopes are scientific instruments that use a beam of electrons to examine objects on a very fine scale
Timespan Dates:	Timespan Title:	Timespan Description:
01/01/1590 to 01/01/1931	Developing Cell Theory