Hans contribution was in 1950 heinvented the first compound to be seen under a microscope by lining two lenses two produce Extra-Large images or viewing because you could not see organism's with the naked eye.
It's the cell theory, I forgot the other ones but one of them is all living things are made up of cells
cotribution of eduard strasburger
he discovered that all animals have cells
Robert Hooke discovered cell theory and cells
Well, it is a critical question, but still the answer exist,, Rudolf Virchow has given the best contribution among the four to the cell theory... He developed the theory given by Theodor schawnn.... and the other two did not contribut much in this.....Have a good day!! :)
Hans and Zacharias Janssen invented the compound microscope in 1595.
They created the compound microscope
They created the compound microscope, allowing people to better analyze and understand the complexity of cells.
The cell theory
Based on the timeline of the cell theory, father and son, Hans and Zacharias Janssen started produced the first compound microscope. They combined two convex lenses within a tube. This was in the year 1595.
he found the cell
Schwann
in manila
Mendel
onggoy siya
explain and discussed the cell theory.
It's the cell theory, I forgot the other ones but one of them is all living things are made up of cells