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.
Retired US Navy officer, astronomy buff, history nut. There have been three or four partial eclipses in each decade, but the last TOTAL solar eclipse visible in Atlanta, GA was on June 24, 1778. The NEXT total solar eclipse visible in Atlanta will be on May 11, 2078.