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.
The Next Total Solar Eclipse in the U.S. Will Be August 2017. The next time the sun is completely eclipsed and viewable in the United States wonât be until August 2017. More specifically, according to NASA, it will take place on August 21, 2017. You should probably mark your calendars now! The total eclipse will only be viewable through a narrow corridor across the United States.