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Democritus Atomic Theory
Democritus came up with the atomic theory when he was only ten years old. His atomic theory was his belief that atoms could be split into smaller and smaller parts an infinite amount of times. His theory stated that he thought that the atoms were present in all states of matter, but they can not be destroyed, created individually, or separated from each other. He came up with this theory by wondering if you could cut a stick in half and cut it in half again and keep on doing it forever. -
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Democritus
Democritus was named the father of modern science. He was born in 460 BC and died in 370 BC. His first discovery was in 492 BC. His discovery was that everything is made up of tiny that never get deleted, they can only be moved or changed. Also he thought that the things in the atoms were all invisible and exactly alike. He thought the atoms could never be destroyed or erased. -
John Dalton
John Dalton was born on September 6, 1766. In 1803, Dalton took the position of a teacher. In 1794, he worte his scientific paper. His study of gases led Dalton to wonder about what these invisible substances were actually made of. -
John Dalton's Atomic Theory
Atoms are made of matter. They are indestructible. Atoms of a given element are identical in mass and properties. Compounds are formed by a combination of two or more atoms. Reasrrangement is a chemical reaction to atoms. -
J.J Thomson
JJ Thomson or joseph John Thomson was born in 1856. When he was 48 years old he he won the nobel prize in Physics. All his life all his dad wanted wanted him to do was be an engineer but he wanted other. He lived until he was 84 years old. -
J J Thomson Atomic Theory
Thomson studied electron discharge in high-vacuum cathode-ray tubes. He found this is a way that charged plates and magnets as evidence. This led to the finding of quotbodies which are smaller than atoms. -
Ernest Rutherford
Ernest Rutherford was born in 1871 and died in 1937 at age 66. In 1911, he discovered that atoms are not independent, that they are controlled by a nucleus. He discovered this by noticing that the atoms majority of it’s weight was concentrated at a tiny point in the center and that was where the nucleus was located. -
Ernest Rutherford's Atomic Theory
Ernest worked on radioactivity. He studied radiations emitted from uranium and thorium and named them Alpha and Beta. Ernest made an attempt to study the structure of an atom. The results of his experiment was the existence of an atomic nucleus. -
Niels Bohr
Born on October 7, 1885. He was a accomplished physicist. He won the 1922 Nobel Prize in physics for his ideas. He helped to establish CERN, a Europe-based particle physics research facility. Bohr then worked with the Manhattan Project in Los Alamos, New Mexico, where the first atomic bomb was being created. And then discovered a theory of an atom. -
Niels Bohr Atomic Theory
In 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus. The motion of the electrons in the Rutherford model was unstable. according to classical mechanics and electromagnetic theory, any charged particle moving on a curved path emits electromagnetic radiation. The energy of an electron depends on the size of the orbit and is lower for smaller orbits. -
Erwin Schrodinger
Erwin schrodinger was a very smart man who went to many colleges before he was drafted into world war I. Shortly after in about 1926 he won the nobel prize in physics. In his later years he wrote a book called “What is life”. He died when he was 73. -
Erwin Schodinger
Erwin found that electrons and arranged circle around the nucleus. This is just like how the planets orbit the sun. He had 4 different principles stating how this worked.
