This consists of a sealed glass container with two electrodes that are separated by a vacuum.
In divided societies gender research has a relatively low profile.
Not only did it incorporate new discoveries, such as the existence of the electron, it also introduced the notion of the atom as a non-inert, divisible mass.
Atomic Theory to the 19th century: The earliest known examples of atomic theory come from ancient Greece and India, where philosophers such as Democritus postulated that all matter was composed of tiny, indivisible and indestructible units.