Rys Cell Theory Timeline

First Microsope

Oct 21, 1600

Zacharias Janssen made the first compound microscpoe.

Medicine

Oct 21, 1644

Jan Baptist van Helmont and Lorenz Oken both used the cell theory and help make better medicine on using the cell theory.

Term Cell observed

Oct 21, 1665

Robert Hooke discovered while looking under a microscope that the cork was made up of little boxes that looked liked cells that monks lived in. He named the little boxes cells because of that

Leeuwenhoek improves microscope and finds new cells

Oct 21, 1678

Antonie van Leeuwenhoek grinded up lenses and made them into simple microscopes. He described single celled organisms and called them animacals. Hooke confirmed Leeuwenhoeks findings.

Robert Brown and the Nucleus

Oct 21, 1830

Robert Brown was the first to discover the nucleus as an essential part of the cell. He saw that it was in all cells and organized them by how many nucleuses they have.

Plant structure looked at.

Oct 21, 1839

Matthias Jakob Schleiden looked at plant structures under a microscope and realized that all plants are made of cells. He was having lunch with Theodor Schwanna zoologist and he said the same thing will looking at animal tissues. Then they released Microscopic Investigations on the Accordance in the Structure and Growth of the cell theory. It said all living things are made up of cells.

Tissues

Oct 21, 1852

Albert von Roelliker was the first to look at the tissues of living things.

Rudolph Virchow

Oct 21, 1858

Proposed that all cells come from pre-existing cells.

Louis Pasteur

Oct 21, 1858

Louis Pasteur did an exeriment on spontaneous generation. He made steps on the modern scientific method. Living organisms came to life by nonliving matter.

Aristotles Observations

Mar 2, 2022

Said there was no boundaries between living and non living things. And that things spontaneously generated to form living and non living things.