Please enable JavaScript.
Coggle requires JavaScript to display documents.
history of the atom - Coggle Diagram
history of the atom
J.J. Thomson
Sir Joseph John Thomson (18 December 1856 – 30 August 1940) was a British physicist and Nobel Laureate in Physics, credited with the discovery of the electron, the first subatomic particle to be discovered.
J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup."
-
ernest rutherford
Ernest Rutherford contributed to the atomic theory through his discovery of the nucleus of the atom and through the discovery of the proton. In 1911, during his famous gold foil experiment, Rutherford discovered that atoms contained a dense, positively charged core which he named the nucleus.
(30 August 1871 – 19 October 1937) was a New Zealand physicist who came to be known as the father of nuclear physics
-
niels bhor
Niels Henrik David Bohr (Danish: [ˈne̝ls ˈpoɐ̯ˀ]; 7 October 1885 – 18 November 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. Bohr was also a philosopher and a promoter of scientific research.
Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level (or orbit) to another.
-
erwin schrödinger
Schrödinger began to think about explaining the movement of an electron in an atom as a wave. By 1926 he published his work, providing a theoretical basis for the atomic model that Niels Bohr had proposed based on laboratory evidence.
Erwin Rudolf Josef Alexander Schrödinger ( 12 August 1887 – 4 January 1961), sometimes written as Erwin Schroedinger or Erwin Schrodinger, was a Nobel Prize-winning Austrian physicist with Irish citizenship who developed a number of fundamental results in quantum theory: the Schrödinger equation provides a way to calculate the wave function of a system and how it changes dynamically in time.
-
john dalton
The first part of his theory states that all matter is made of atoms, which are indivisible. The second part of the theory says all atoms of a given element are identical in mass and properties. The third part says compounds are combinations of two or more different types of atoms.
How did John Dalton discover atomic theory?
In 1803 Dalton discovered that oxygen combined with either one or two volumes of nitric oxide in closed vessels over water and this pioneering observation of integral multiple proportions provided important experimental evidence for his incipient atomic ideas.
September 1766 – 27 July 1844) was an English chemist, physicist and meteorologist.
as little as one hundred years ago, scientists were still debating what exactly an atom looked like. This graphic takes a look at the key models proposed for the atom, and how they changed over time.
