The question probably refers to 'the modern theory of electron clouds'. This theory is now almost a century old and is called quantum mechanics. It describes the states of electrons in an atom as 'electron clouds', so-called orbitals, which indicate the probability distribution of the electron wave function. In contrast to a naive classical picture that pictures electrons as point-like particles with given velocity and position, the quantum mechanical picture describes electrons as smeared-out matter waves following the Heisenberg uncertainty principle.
The electron was discovered by using cathode ray tubes. When it was discovered that the cathode ray diverted away from the negative end of a magnet to the positive end, it revealed that there was a negative particle present in the ray.
The Physicist, Galileo Galilei.
No scientist found the Earth.
that the more heat u have the quicker the evaporation
Electron micrograph
John Joseph Thomson (J.J. Thomson)
Niels Borh, a Danish scientist, discovered this in 1913
The scientist who coined the term "electron" was J.J. Thomson. He discovered the electron in 1897 while working on experiments involving cathode rays.
Ernest Rutherford is the name of the scientist who discovered that atoms have positively charged nuclei.
benjamin franklin
wegener alfred
The scientist who discovered the electron shell in 1913 was Niels Bohr. He proposed the Bohr model of the atom, which described electrons orbiting the nucleus in distinct energy levels or shells. This model helped explain the stability and spectral properties of atoms.
Mary Leakey
Anders Celsius.
Andreas Vesalius
still not known....
The scientist credited with the discovery of the cathode ray is J.J. Thomson. Thomson conducted experiments with cathode rays in the late 19th century and discovered the electron, which revolutionized our understanding of atomic structure.