-
500 B.C.
He said that all matter constist of extremly small particles that could NOT be divided.
He came up with it by talking about it with other people. -
He said that there was no limit to how many times matter could be divided
He came up with this by talking about this with other people -
He concluded that a gas consists of individual particles
The way he proved this was he did expriments and figured out that no matter wht a gas has a fixed composition -
He discovered that uranium emits fast moving particles that have fast-moving particles that have a positive charged.
He did an expriment to prove it -
He did the gold foil experiment.He did this experiment to see what the reaction the alpha particles would have to gold foil
-
He said that electrons move in spherical orbits at a fixed distances from the nucleus.
-
He said that the beam was a stream of charged partclies that interacted with the air in the tube and caused the air to glow.
How he came up with this by doing an expriment. In his exprirment he placed a pair of charged metal plates on either side of a glass tube. The plates caused the beam to deflect, or bend, from its striaght path -
He thought that electrons revolve around the positively charged center of the atom like the rings of Saturn.
-
He said that moving particles like electrons have some properties of waves.
-
He devolped mathematical equations to describe the motion of electrons in atoms.
-
He confirms the existence of newtons, wich have no charge.
