What did RA Millikan discover?
In 1910 Robert Millikan succeeded in precisely determining the magnitude of the electron’s charge. Small electrically charged drops of oil were suspended between two metal plates where they were subjected to the downward force of gravity and the upward attraction of an electrical field.
What was Enrico Fermi’s theory?
Phys., 1934) proposes a theory of the emission of ß-rays, based on the hypothesis, first proposed by Pauli, of the existence of the neutrino. The Nobel Prize for Physics was awarded to Fermi for his work on the artificial radioactivity produced by neutrons, and for nuclear reactions brought about by slow neutrons.
What is Max Planck theory?
Planck postulated that the energy of light is proportional to the frequency, and the constant that relates them is known as Planck’s constant (h). His work led to Albert Einstein determining that light exists in discrete quanta of energy, or photons.
Why did Fermi win Nobel Prize?
The Nobel Prize in Physics 1938 was awarded to Enrico Fermi “for his demonstrations of the existence of new radioactive elements produced by neutron irradiation, and for his related discovery of nuclear reactions brought about by slow neutrons.”
Did Enrico Fermi believe in God?
Although he was baptized a Roman Catholic in accordance with his grandparents’ wishes, his family was not particularly religious; Enrico was an agnostic throughout his adult life.
What happened at Four Courts on 30 June 1922?
At 16.00 hrs on 30th June 1922, having held out for three days, the Four Courts garrison consisting of 140 men, unconditionally surrendered to Free State Forces. Casualties consisted of three Anti – Treaty forces killed and eight wounded. Free State Forces had lost seven killed and seventy wounded.
What happened to the Four Courts in Ireland?
On Wednesday 28th of June 1922, the most recognisable building in Ireland, the Four Courts on Inns Quay in Dublin, was enveloped in a cloud of dust as artillery shells imploded into its edifice. The Irish Civil War had commenced.
What was the ‘block’ at the Four Courts?
As the battle raged at the Four Courts, other Anti-Treaty units took up position in and around Sackville St. (now O’Connell St.). Commandant Cathal Brugha with an estimated seventy men and women took command of what was to become known as the ‘Block’.
How did Rory O’Connor defend Four Courts?
Within the Four Courts, Rory O’Connor deployed his men in a defensive role. The complex had been well fortified with Lewis machine guns and rifles covering the main approaches to the building. A commandeered armoured car had been placed at the gates, its Vickers machine gun covering any threat that might materialise.