Jellyfish: Who is this Zacharias Janssen you are talking about? Ghost Girl: He was a famous scientist that invented the first microscope with his father.
Many People ask the question who is Robert Hooke? I also ask how could you not know who he is? then I say he started out by building vacuum pumps and then built some of the earliest telescopes and observed the rotations of Jupiter and Mars. He also named the cell after the rooms that monks live in.
Rudolf Virchow was the man who discovered that cells came from pre-existing cells. He was also an only child from a working-class family.
Robert brown is known for finding the nucleus in the cell, he also was a Scottish botanist and palaeobotanist who made important contributions to botany largely through his pioneering use of the microscope.
Matthias Schleiden discovered that all cells are alive and also was one of the first scientists to accept Darwin's theory of evolution. He also discovered that all plants are made of cells.
Theodor Schwann discovered that all living things are composed of cells and cell products. He also discovered that all animals are made from cells.