570-495 BC
Pythagoras
Pythagoras of Greece was the first true mathematician. He proved the Pythagorean theorem, squares of A and B on a right angle triangle equal the area of the square of the longest side C.
460-370 BC
Hippocrates
Hippocrates was a Classical Greece, Greek physician. He was the Father of Medicine and the founder of the Hippocratic School of Medicine which revolutionized medicine in ancient Greece.
450-350 BC
Euclid
Euclid of Alexandria was a Greek mathematician. He was the founder or father of geometry and developed Euclidean geometry, elements and algorithm.
287-211 BC
Archimedes
Archimedes was an Ancient Greek genius, inventor and mathematician. He was educated in Alexandria, Egypt. His discovery of the relation between the surface and volume of a sphere and its circumscribing cylinder is often referred to as the Archimedes principle.
100-168 AD
Ptolemy
Ptolemy was a Greek mathematician, astronomer, geographer and astrologer. He developed the idea of Earth as the center of the universe. Ptolemy wrote important scientific treatises on math, astronomy and geography.
1398-1468
Gutenberg
Johannes Gutenberg was the German inventor who created the first movable type machine, which made mass printing possible. His machine allowed presses to print books worldwide.
1561-1626
Francis Bacon
Francis Bacon, the 1st Viscount St Alban was an English statesman and philosopher. Bacon was Lord Chancellor of England. Bacon helped develop the scientific method ushering in the scientific revolution.
1564-1642
Galileo
Galileo was an Italian astronomer, physicist and engineer. He is considered the father of observational astronomy, modern physics, scientific method and modern science. Galileo disproved the flat earth myth.
1623-1662
Blaise Pascal
Blaise Pascal was a French mathematician, physicist and religious philosopher. He developed the foundation for the modern theory of probabilities and invented the Pascaline, a 17th century calculator.
1627-1691
Robert Boyle
Robert Boyle was an Irish natural philosopher, chemist, physicist, and inventor. Boyle was one of the founders of modern chemistry and pioneered modern experimental scientific method.
1638-1675
James Gregory
James Gregory was a Scottish mathematician and astronomer. He discovered infinite series representations for a number of trigonometry functions. Gregory proposed a new telescope design, now known as the Gregorian telescope.
1647-1727
Isaac Newton
Sir Isaac Newton was the English physicist and mathematician who discovered gravity. He is one of the most influential scientists of all time.
1693-1776
John Harrison
John Harrison was an English carpenter and clockmaker. He invented the marine chronometer, a device for calculating longitude at sea. His chronometer revolutionized navigation and made long sea voyages safer.
1706-1790
Benjamin Franklin
Benjamin Franklin was a United States Founding Fathers. He helped draft the Declaration of Independence and the U.S. Constitution. He is famous for his electricity experiments and was a writer, printer, philosopher, scientist, inventor, and a diplomat.
1736-1819
James Watt
James Watt was a Scottish chemist and steam engines inventor. Mass transportation engines using steam were used in some countries until the late 1900s.
1745-1827
Alessandro Volta
Alessandro Volta was an Italian physicist, chemist, and electricity and power pioneer. He discovered methane and invented an electric battery.
1749-1823
Edward Jenner
Edward Jenner was the English doctor and the father of immunology. He helped create a smallpox vaccine and popularized getting people vaccinated.
1776-1844
John Dalton
John Dalton was an English chemist, physicist and meteorologist. He introduced the atomic theory into chemistry. And his work on color blindness is honored by naming protanopia, a form of color-blindness, Daltonism.
1791-1867
Michael Faraday
Michael Faraday was English, one of the most influential scientists in history. Due to his efforts that electricity became practical for use in technology.
1791-1892
Samuel Morse
Samuel Morse was an American and one of the pioneers in communication. He developed the Morse code, a system of using dots and dashes.
1808-1889
Antonio Meucci
Antonio Santi Giuseppe Meucci was an Italian inventor believed to have invented the very first telephone.
1815-1852
Ada Lovelace
Countess Ada Lovelace was the the first computer programmer, the only legitimate child of the English poet Lord Byron, raised by her mother Lady Anne. Charles Babbage invented the 1st computer and she translated his work from French into English adding original thinking on coding.
1822-1884
Gregor Mendel
Gregor Johann Mendel was an Augustinian friar and scientist. Considered the father of genetics he noticed that some pea pods contained yellow and some contained green peas.
1822-1895
Pasteur
Louis Pasteur was a French biologist, microbiologist and chemist. Pasteur invented pasteurization and developed vaccines for chicken cholera, anthrax, and rabies. His discoveries have since saved millions of lives.
1826-1909
Neumayer
Georg von Neumayer was a German scientist, magnetician, oceanographer, and meteorologist. He was a polar explorer and sailed before the mast to South America.
1827-1895
Joseph Gayetty
Joseph Gayetty invented the first commercially packaged toilet paper in 1857. His toilet papers were loose, flat, sheets of paper. He could be considered the father of modern toilet paper.
1846-1914
Westinghouse
George Westinghouse Jr. was an American entrepreneur and engineer. Westinghouse created the railway air brake and was a pioneer of the electrical industry.
1847-1922
Bell
Alexander Graham Bell was a Scottish inventor, scientist, and engineer. Bell invented and patented a telephone that eventually found worldwide use.
1882-1935
Emmy Noether
Emmy Noether was a brilliant German mathematician and a major contributor to abstract algebra and theoretical physics.