William Harvey first demonstrated the functions of the heart and the complete circulation of the blood. But the heart was known for thousands of years before that.
Antonie van Leeuwenhoek in 1683. More information, if you wish it, in wikipedia.
Robert Hooke was the first to use the name cell he was also the first scientist to find and discover cells heh i live up to my username :D
Robert Hooke was the first person to discover the cell when he was observing a slice of cork (plant) under the microscope.
kahit ano Aristotle is a philosopher not a scientist
Robert Hooke
William Harvey
Galileo was the first
jake fisher
Sir Isaac Newton.
the fisr person to discover Hydrogen was Henery Cavendish, he discovered it in 1766.
According to biologists, the first scientist to discover cells is Robert Hook who observed the cells of living and dead things in the late 17th century.
Joseph Fourier
A scientist and explorer can DISCOVER but a scientist can DISCOVER and INVENT
Charles Darwin
Gravity, that it pulled everything to the center of the earth.
The first scientist discovered smallpox in an Egyptian mummy dating back to 1157 B.C. This first scientist was Abu Bakr Muhammad ibn Zakariya al-Razi.
Well, first of all scientific hygrenals used by scientists made it easy to discover it.