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 second part of the book is titled Outcomes of Social Revolutions in France, Russia, and China (161-173) and explains shared patterns across all three Revolutions as well as key variations among the Revolutions.The second part of the book is divided into four chapters.he Chinese Revolution is the most obviously peasant-based social revolution of the trio (France, Russia, China) presented in this book. Despite some similarities to France and Russia, the agrarian class and local political structures of old-regime China resembled those of England and Prussia.