He discovered that the atom contained smaller particles called electrons.
according to jj thomsons model of an atom,an atom consists of a positively charged sphere with electrons in it.however,it was later found that positively charged particles reside at the center of the atom called nucleus,and the electrons revolve around the nucleus.
It should be noted here that no one knows what an atom looks like, and conventional wisdom infers that an atom is just the border of energy that we can see evidence of. This is surely not worded correctly for a scientist--but the point is that a postulate of science goes that we will never actually 'see' an atom, no matter how powerful our microscopes get, because they border the quantum level, where the physical world reveals its true nature as energy.
The pairing of Isaac Newton with the contribution to the understanding of the atom is incorrect. Newton was primarily known for his work in physics and mathematics, particularly his laws of motion and universal gravitation, which were foundational to classical mechanics. The understanding of the atom was more significantly influenced by scientists like John Dalton, J.J. Thomson, and Ernest Rutherford.
Marie Curie's work on radioactivity fundamentally changed our understanding of the atom by demonstrating that atoms are not indivisible and can undergo spontaneous transformation. She showed that atoms of one element can transmute into atoms of another through radioactive decay, challenging the idea of atoms as immutable building blocks of matter. This contributed to the development of modern nuclear physics and our understanding of the structure of the atom.
John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and Erwin Schrödinger were all instrumental in the development of our understanding of the atom. Each of them made significant contributions to the atomic theory and the structure of the atom.
He discovered that the atom contained smaller particles called electrons.
He discovered that the atom contained smaller particles called electrons.
Isotopes and Electrons
J.J Thompson
J.J. Thompson
Both Thompson's and Rutherford's models of the atom proposed that atoms consist of smaller particles. They both suggested that there is a central nucleus within the atom.
J.J. Thompson
J.J Thompson
If i remember correctly, Dalton's focuses more on the nucleus while Thompson's focuses more on electrons. But I'm not sure. well in 1803 John Dalton makes a strong case that atoms are small, solid balls and Joeseph John Thompson discovers electrons, and developed plum pudding model of an atom..... Dalton says that nothings smaller than the atom, but Thompson says that electrons are.
you answer it for me !!
100 hundred years ago
J.J. Thompson discovered the electron. His atomic model is also called the plum pudding model.