| The barium-flame-colour generalization is a deductive consequence of the postulates of atomic theory. |
| Like the atomic theory itself, Avogadro's law is an outcome of physical work and of physical reasoning. |
| In the early days of modern atomic theory, the idea of diatomic molecules seemed counter-intuitive. |
| He is famous for his atomic theory, given as a clear, precisely formulated system utilizing principles of Newtonian mechanics. |
| For Darwin, each seed is a tiny universe, and in his poetic fashion, Darwin anticipates the poetry of modern atomic theory. |
| During the year of 1801, Dalton addressed an atomic theory of how air was not a complex substance but it was a mixture of oxygen and nitrogen. |
