Explore the history of the discovery and the properties of the electron, the negatively charged subatomic particle that orbits around an atom's nucleus.
Explore the history of the discovery and the properties of the proton, the positively charged subatomic particle that, with the neutron, makes up an atom's nucleus.
"Explore the history of the discovery and the properties of the neutron, the subatomic particle that, with the proton, makes up an atom's nucleus." -- from publisher's website.