The correct answer is Sir Ernest Rutherford.
One of the first findings on atomic energy theory was reached in 1911 by Rutherford, who became known as the father of nuclear physics.
He discovered that the mass of the atom was concentrated in its nucleus, and proposed that the nucleus has a positive charge and is surrounded by negatively charged electrons, which had been discovered in 1897 by J. J. Thomson.
His theory was complemented in 1913 by Niels Bohr, who placed the electrons in definite shells or quantum levels.
How about: World War I has a variety of complicated causes, including: <span>Assassination of Archduke Franz Ferdinand</span>, a rise of nationalizum in bosina-herogovina (sp), and increase militerism by Germany.
To change the historical changes in thought & belief, to changes in social & institutional organization, that unfolded in Europe between roughly 1550-1700; beginning with Nicholas Copernicus (1473-1543), who asserted a heliocentric (sun-centered) cosmos, it ended with Isaac Newton (1642-1727), who proposed universal laws and a Mechanical Universe.
