Did Democritus Discover the Atom?

Around 400 B.C.E., the Greek philosopher Democritus introduced the idea of the atom as the basic building block matter.

What did Democritus discover?

He did … The main contribution Democritus made was his discovery of the atomic theory. He eventually discovered that the mass of the negatively charged particles was 2000 times lighter than the mass of a hydrogen atom. Democritus regarded the freedom of the individual as more important than the needs of the state.

Who first discovered the atom?

The idea that everything is made of atoms was pioneered by John Dalton (1766-1844) in a book he published in 1808. He is sometimes called the "father" of atomic theory, but judging from this photo on the right "grandfather" might be a better term.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.