scientists timeline

Zacharias Janssen made the first crude compound microscope.

In the mid 1600s Anton Van Leeuwenhoek made the first simple microscope using a glass bead for a lens

Robert Hooke used the term cell to discribe the empty boxes seen in cork

Theodor Schwann studied animal cells and determined that all animals were made of cells

Rudolph Virchow hypothesized that cells don't form on their that cells divide to form new cells

Matthais Schleiden studied plant parts and determined that all plants are made of cells

An important discovery with microscopes is that lenses combining two types of glass could reduce the chromatic effect, with its disturbing halos resulting from differences in refraction of light.

Gerd Binnig and Heinrich Rohrer invent the scanning tunneling microscope that gives three-dimensional images of objects down to the atomic level.

The Human Genome draft was completed, laying success stones for the project which was completed in April 14, 2003. The project succeeded sequencing and mapping of human genome with a 99.99 percentage.