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Aug 1, 1000
Democritus
From 460-370 B.C.Democritus was the first person to suggest that matter could not be infinitely divided. He had coined the term "atomos" which later became "atoms" to describe the tiny particles that holds matter together. "Atoms can not be created, destroyed, or further divided." -
Aug 1, 1001
Aristotle
Disaggreed with Democritus idea that atoms move through empty space.384- 322 BC -
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John Dalton
John Dalton was a school teacher who marked the beginning of the development of modern atomic theory. He took democritus's ideas about matter and revised them based off his own scientfic resesearch. He also revied the term atom. -
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Sir william crookes
After noticing a green flashing light in a dark labratoy one day Sir William Crookes eventually invented the telivision which leads to the phrase "gona watch the tube". -
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JJ. Thompson
Physisit JJ. Thompson created a series of CRT expierements at Cambridge to determine the ratio the particles cahrge to its mass. He later won a noble prize in 1906 for his research. -
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Robert Milikan
Robert milikan was an american Phycist who designed an oil drop apparatus to determine the charge of the electron. -
James Chadwick
English physicist, James Chadwick (1891 – 1974) demonstrated that the nucleus had another neutral subatomic particle, the neutron -
proton and neutron
Rutherford refined his concept of the nucleus to include that it contained positively charged particles called protons.
