In particular, the energy of a photon equals Planck's constant times the frequency of the radiation. Mathematically, this is given by the equation E = hf. Planck's constant is the fundamental constant of quantum theory that determines the scale of the small-scale world.lanck's constant = 6.63 * 10^-34 joule-second (J-s). The total energy in an electromagnetic wave is the sum of the energies of each photon in the wave. The energy of a photon is so small that we usually measure it in electronvolts (eV). One eV is the potential energy of each electron in a 1-volt battery.
A social revolution inevitably encounters an obstacle in the form of the political power of the ruling class. Hence, the first act of a social revolution is political revolution, the attainment of state power by the revolutionary class.
The Industrial Revolution was a period when new sources of energy, such as coal and steam, were used to power new machines designed to reduce human labor and increase production. The move to a more industrial society would forever change the face of labor. The first Industrial Revolution began in Great Britain after 1750. There were several factors that combined to make Great Britain an ideal place for industrialization. First, the Agricultural Revolution of the 18th century created a favorable climate for industrialization.