Assertion: hydrogen atom's electron | /r/CapableOf | carry a charge e
Facets:
value: unlike the planets
type: OTHER
Source sentences:
text: Unlike the planets, an electron carries a charge e giving rise to a charge density ρ, and like the planets the electron's velocity v changes direction continuously (dv/dt ≠ 0), so that the current density J (= ρv) of an orbiting electron is time-dependent.