Approx. 2 500 years ago.
However, let's get our terminology straight: Leucippus didn't "discover" anything, except possibly that his fellow Greeks were willing to listen to any crazy idea you pulled out of your posterior. Leucippus and/or Democritus (his student) were the people who first talked about "atoms", but they had no idea what they were really like or even that they really existed.
because the credit was given to Dylan Narvadez (buang)
Leucippus and Democritus were important Greek philosophers from the antiquity. Leucippus was the first to have the idea of an atomic structure of all kinds of matter, 2500 years ago. Democritus was his disciple.
Leucippus (450?-370? BC), was a Greek philosopher. He proposed the atomic theory of matter, that all matter is constituted of identical indivisible particles called atoms. This theory was further developed by his student, Democritus.
Moseley was the first to clear and scientifically justify in 1913 the atomic number studying X-ray spectra of chemical elements. But Moseley hadn't a personal atomic theory, he was not the discoverer of the atomic theory.
It depends. If you mean just any old atomic theory, credit usually goes to either Democritus or his mentor Leucippus. However, if you mean an atomic theory that wasn't totally blowing smoke out their nether regions, was backed up by actual experimental data, and at least resembled the truth in certain ways if you squinted hard enough, I'd say John Dalton is probably your guy.
he did not develop anything regarding the 'atomic theory' for he was against that theory.
today
Leucippus is credited with developing the concept of atomism in ancient Greek philosophy, which proposed that the universe is composed of tiny, indivisible particles called atoms. Leucippus' ideas laid the foundation for the later development of atomic theory by his student Democritus.
The Greek philosophers Leucippus and Democritus
In 328 BCE, Aristotle believed that all matter was made of water, air, fire, and earth.
Leucippus is a mysterious figure whose exact dates are unknown - some say he never existed - but is still considered the be the founder of the Atomistic theory. Democritus was born 460 B.C. and died 370 B.C. He was a disciple of Leucippus and both men are credited with the atomistic theory.
Yes, Democritus had a student named Leucippus. Leucippus is considered to be the co-founder of the atomic theory along with Democritus, and they both proposed that matter is made up of indivisible particles called atoms.
460 b.C
2012
because the credit was given to Dylan Narvadez (buang)
i think he discover atomic theory.
460 b.C.