| A | B |
|---|
| Kepler | He used mathematics to prove Copernicus' heliocentric theory |
| Brahe | His data was used by Kepler to prove a heliocentric theory |
| Newton | He developed the law of universal gravitation |
| Janssen | He invented a microscope |
| Priestley | Englishman who isolated oxygen |
| Jenner | He developed a smallpox vaccine using cowpox |
| Torricelli | He invented the mercury barometer |
| Harvey | He suggested that the heart was a pump that circulated blood |
| Boyle | He is considered the founder of modern chemistry |
| van Leeuwenhoek | Using a microscope he observed red blood cells |
| Vesalius | He dissected human corpses |
| Celsius | His temperature scale set freezing at zero |
| Lavoisier | Frenchman who named his isolated gas, oxygen |
| Descartes | He supported deductive reasoning and the use of logic and mathematics |
| Bacon | He supported inductive reasoning and the use of experimentation |
| Fahrenheit | His temperature scale set freezing at 32 degrees |
| Copernicus | His heliocentric theory has the planets orbiting the sun in perfect circles |
