A substance is anhydrous if it contains no water, for example, salts lacking their water of crystallisation. The way of achieving the anhydrous form differs from one substance to another.
A partial solar eclipse at its peak at 3:37 p.m. in Mesa on Oct. 23, 2014. The eclipse was visible over most of North America and covered 44 percent of the Arizona sun. Michael Chow/The Republic.
Total Solar Eclipse 2017. On August 21, 2017, a phenomenal natural wonder will take placeâa total eclipse of the sun, which turns daytime into night while the sunâs corona still blazes in the sky. Rexburg, Idaho, lies in the eclipseâs central path, giving us a spectacular view.