What is the United States Naval Observatory?

Introduction The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce positioning, navigation and timing for the United States Navy and the United States Department of Defence. The observatory is located in Northwest Washington, D.C. at the Northwestern end of Embassy Row.… Read More


Who was Albert A. Mickelson?

Introduction Albert Abraham Michelson FFRS HFRSE (surname pronunciation anglicized as “Michael-son”, 19 December 1852 to 09 May 1931) was a German-born American physicist known for his work on measuring the speed of light and especially for the Michelson-Morley experiment. In 1907 he received the Nobel Prize in Physics, becoming the first American to win the… Read More