a unit of mass used in particle physics. Mass and energy are related by Einstein's famous equation, E = mc 2. The constant c is the speed of light, 299.79 x 10 6 m/sec. An energy of 1 electronvolt is therefore equivalent to a mass of about 1.782 662 x 10-33 gram, or about 1.073 544 x 10-9 atomic mass unit.
Yulee is a census-designated place (CDP) in Nassau County, Florida, United States. The population was 11,491 at the 2010 census.
At the Yulee Sugar Mill State Park in Homosassa, you can visit a sugar mill used to supply troops during the Civil War. In the nearby Citrus County seat of Inverness, donât miss the historic county courthouse, now more than 100 years old.