One of the leading scientists in classical antiquity. Generally considered the greatest mathematician of antiquity, Archimedes anticipated modern calculus and analysis by applying concepts of infinitesimals and the method of exhaustion to derive and rigorously prove a range of geometrical theorems, including the area of a circle, and the surface area and volume of a sphere. His other achievements include deriving an accurate approximation of pi, defining and investigating the spiral bearing his name, and creating a system using exponentiation for expressing very large numbers.

German chemist who investigated emission spectra of heated elements, and discovered caesium (1860) and rubidium (1861) with physicist Gustav Kirchhoff. Bunsen developed several gas-analytical methods, was a pioneer in photochemistry, and did early work in the field of organoarsenic chemistry. With his laboratory assistant, Peter Desaga, he developed the Bunsen burner, an improvement on the laboratory burners then in use.

English alchemist, mathematician, physicist, astronomer and theologian who is widely recognised as one of the most influential scientists of all time, and a key figure in the scientific revolution. His Philosophiæ Naturalis Principia Mathematica, published in 1687, laid the foundations of classical mechanics. Newton also made seminal contributions to optics, and shares credit with Leibnitz for developing the infinitesimal calculus.

Russian chemist and inventor who formulated the Periodic Law, created a farsighted version of the periodic table of elements, used it to correct the properties of some already discovered elements, and predict the properties of eight elements then undiscovered.

An astrophysicist from Northern Ireland who, as a postgraduate student, discovered the first radio pulsars in 1967 – one of the most significant scientific achievements of the 20th century.

English chemist and X-ray crystallographer whose work was central to the understanding of the molecular structures of DNA, RNA, viruses, coal, and graphite. Although her works on coal and viruses were appreciated in her lifetime, her contributions to the discovery of the structure of DNA were really only recognised posthumously.

An astronomer, physicist and engineer from Pisa. He has been called the “father of observational astronomy”, the “father of modern physics”, the “father of the scientific method”, and the “father of modern science”. His championing of heliocentrism and Copernicanism was controversial during his lifetime.