CAMBRIDGE, England â British scientist Stephen Hawking has decoded some of the most puzzling mysteries of the universe but he has left one mystery unsolved: How he has managed to survive so long with such a crippling disease.
Brownian movement. n. 1. (General Physics) random movement of microscopic particles suspended in a fluid, caused by bombardment of the particles by molecules of the fluid. First observed in 1827, it provided strong evidence in support of the kinetic theory of molecules.
The Progressive Era was a period of widespread social activism and political reform across the United States, from the 1890s to 1920s. The main objective of the Progressive movement was eliminating corruption in government. The movement primarily targeted political machines and their bosses.By taking down these corrupt representatives in office a further means of direct democracy would be established.s part of this tradition of maternal activism, the Progressive-era General Federation supported a range of causes from the pure food and drug administration to public health care for mothers and children to a ban on child labor, each of which looked to the state to help implement their vision of social justice.