The Bohr model is a neat but quite imperfect depiction of the inner workings of an atom before things got too muddled up by quantum principles.

Basically, Dalton just expanded on the Greek idea of the atom. An atom is a small things, and there are different masses with different properties. J. Jonah Jameson Thomson - (AKA J.J.) ...

In this segment, the students learn about different models of the atom, including Dalton’s model, Thomson’s model, Rutherford’s model, and the Bohr model. Aired 07/10/2016 | Rating NR.

Bohr’s Model of an Atom: Students get to know the Bohr’s Model of an Atom. Find out what are its limitations and the postulates it is based on.

There was little change in the understanding of the atom until John Dalton (1766-1844), an English chemist, concluded that: all matter is made of atoms, and atoms are indestructible and cannot be ...

Dalton’s model included these ideas: ... An atom is made of tiny negatively charged electrons dotted about a positively charged sphere like a plum pudding. 1909-1911: Rutherford ...