Moreover, the abundance of chemical compounds and their importance in daily life hindered the chemist from investigating the question, in what does the individuality of the atoms of different elements consist. — Johannes Stark Copy Share Image
“In a Newtonian world, all physical quantities, like energy and spin, can take on any values whatsoever. They range over the entire continuum of numbers. Hence, if one were to form a 'Newtonian hydrogen atom' by setting an electron in… — John D. Barrow Copy Share Image
