* Charles Darwin: Famous for his theory of evolution by natural selection, revolutionizing our understanding of biology.
* Charles Babbage: Considered the "father of the computer" for his design of the Analytical Engine, a mechanical general-purpose computer.
* Charles Coulomb: Known for his work in electrostatics, defining Coulomb's law, which describes the force between electric charges.
* Charles Lyell: A geologist who contributed significantly to the understanding of geological processes and the age of the Earth.
* Charles Goodyear: A chemist who discovered the vulcanization process, which revolutionized the rubber industry.
* Charles Wheatstone: A physicist and inventor known for his work on the Wheatstone bridge, a circuit used for measuring resistance.
Please provide more context or specify which "Charles" you are referring to.