thomson and millikan experiments

After the discovery of electrons and protons it was necessary to know how these particles are arranged within the atom. Various scientists tried to describe this structure and after subsequent improvements through experiments, the structure of an atom is well defined tod..

After the discovery of electrons and protons it was necessary to know how these particles are arranged within the atom. Various scientists tried to describe this structure and after subsequent improvements through experiments, the structure of an atom is well defined toda..

Position of an element in the Periodic Table, its atomic number and atomic mass Periodic Table to identify metals, semimetals, nonmetals, and halogens Periodic Table to identify alkali metals, alkaline earth metals and transition metals, and trends in ionization energy, electronegativity, and t..

Position of an element in the Periodic Table, its atomic number and atomic mass Periodic Table to identify metals, semimetals, nonmetals, and halogens Periodic Table to identify alkali metals, alkaline earth metals and transition metals, and trends in ionization energy, electronegativity, and t..

Small drops of oil formed by a sprayer are allowed to fall in between a positively charged upper metal plate and a negatively charged lower metal plate. The space between the two plates is irradiated with X-rays. This displaces some electrons of the air molecules, which consequently get attached t..

Atoms are made up of three fundamental particles: electrons, protons and neutrons. Discharge tube experiments by William Crookes and J.J. Thomson led to the discovery of electro..

Industrially, oxygen is manufactured from the air. The industrial method is based on a very simple principle known as Joule-Thomson effect. Air is first subjected to liquefaction (made liquid) and then to fractional distillation, to separate out oxygen from it. When a gas under pressur..

Cathode Rays - When the pressure in the discharge tube is less than 10 - 4 mm of Hg, the discharge tube starts showing fluorescence. When this fluorescence was investigated, it was found that the fluorescence consisted of beams of negatively charged electrons. These electrons emanate normally from ..

Thermionic Emission - The emission of particles from a hot filament was first discovered by Thomas Edison in 1883 but the effect was left unexplained until the discovery of the electron by J.J. Thomson in 1897. In Edison's experiment, he inserted a second filament in the evacuat..

. In it, he pictured a sphere of positive charges mixed together with an equal number of electrons. For his theoretical and experimental investigations into the electron and the conduction of electricity by gases he was awarded the 1906 Noble prize in Physics. He and his student Rutherford were the..