John Thomson
Thomson, Townsend and Wilson are credited for the discovery of electron in 1991.
The work of J.J. Thomson and Robert Millikan was crucial in determining the mass of an electron. Thomson's experiments in 1897 led to the discovery of the electron, establishing its charge-to-mass ratio. Later, Millikan's oil drop experiment in 1909 allowed for the precise measurement of the electron's charge, which, when combined with Thomson's findings, enabled the calculation of the electron's mass. Their contributions laid the foundation for our understanding of atomic structure.
J.J. Thomson discovered the electron in 1897 while conducting experiments with cathode rays. This discovery was groundbreaking as it provided evidence for the existence of subatomic particles.
His formula allowed other scientists to experiment with their projects.
Robert Hooke's discovery of cells in 1665 helped scientists understand the fundamental unit of life and laid the foundation for the field of biology. His work led to the development of the cell theory, which states that all living organisms are composed of cells.
J.J Thomson
The discovery of iron dates back to ancient times, so there is no specific scientist associated with its discovery. Iron has been used by humans for thousands of years due to its abundance and utility.
The year of the electron discovery is considered 1896.
Discovery
bobby o'winchester
experiments with cathode rays lead to the discovery of the Electron.
electron microscope
Thomson, Townsend and Wilson are credited for the discovery of electron in 1991.
Crookes observed that the cathodic rays are deflected by a magnetic field and concluded that this beam is negatively charged. Thomson established that the beam is composed from a new type of particles called by Fitzgerald electrons. But many scientists contributed to the discovery of the electron.
Some key scientists in the historical development of the atom include Democritus (concept of "atomos"), John Dalton (atomic theory), J.J. Thomson (discovery of the electron), Ernest Rutherford (discovery of the nucleus), and Niels Bohr (Bohr model of the atom). Each of these scientists made significant contributions to our understanding of the atom and its structure.
Joseph Priestly
How did the discovery of temporal skull holes help scientists determine phylogeny of amniotes