Microscope Timeline

Events

First microscope

1590

Hans and Zacharias Janssen made the first microscope by placing two lenses in a tube

Second microscope

1667

Robert Hooke studied various objects wiht his microscpe and published his results in microscopia.

Third microscope

1675

Anton van Leeuwenhoek used a simple microscope with only one lense to look at blood, insects and other objects.

contribution to the cell theory

1823

Robert Brown contributed to the cell theory

atomic theory

1838

Schleiden became the first to formulate what was then an informal belief as a principle of biology equal in importance to the atomic theory of chemistry.

growth . of animals and plants

1839

Microscopical Researches into the Accordance in the Structure and Growth of Animals and Plants, was published

apical cells

1858

first accurate account of apical cells.

disease

1900

He pioneered the modern concept of pathological processes by his application of the cell theory to explain the effects of disease in the organs and tissues of the body. He emphasized that diseases arose, not in organs or tissues in general, but primarily in their individual cells. Moreover, he campaigned vigorously for social reforms and contributed to the development of anthropology as a modern science.

electron microscope

1938

Ernst Ruska develops the electron microscope. The ability to use electrons in microscopy greatly improves the resolution and greatly expands the borders of exploration.