The 'plum pudding' model of the atom was proposed by JJ Thomson, who had also discovered the electron. The 'plum pudding' model of the atom was proposed by JJ Thomson, who had also discovered the ...

Most of the mass and all of the positive charge of an atom is in the nucleus ... he proposed the “plum pudding model” in 1904. As the alpha particles were known to have a lot of energy ...

The plum pudding model. In 1897, ... Rutherford had discovered that atoms contain a nucleus, ... This 'solar system' model of the atom is the way that most people think about atoms today.

The nucleus was discovered in 1911 by Ernest ... Thomson published a description of his version of the atom, commonly known as the "plum pudding model." An excerpt of this paper is found on ...

Thomson discovered that cathode rays ... a knot of electric charge at the center of an atom, rather than being spread out as in the plum pudding model. This convinced Rutherford that atoms ...

Everyone at that time imagined the atom as a "plum pudding." That is ... He realized that Rutherford's model wasn't quite right. By all rules of classical physics, it should be very unstable.

Everyone now knows the basic atomic structure that Rutherford discovered "We're celebrating ... A period in which the 'plum pudding' model of the atom held sway. Rutherford's discovery was a ...