Even recently, in the early 20th century, physicists believed that: a) The smallest particle of matter (the atom) had been quantified, measured, and fully explo

Even recently, in the early 20th century, physicists believed that: a) The smallest particle of matter (the atom) had been quantified, measured, and fully explored. b) There was no more to discover in the field of physics. Clearly, they were wrong. I don't believe any of this is true.