A form of apparatus often used for testing specimens of steel consists of a small electric furnace in which to heat the specimen, and a special thermo-couple pyrometer (see  Pyrometers ) for indicating the range of temperatures through which the steel passes.
Where the American Civil War Began. Decades of growing strife between North and South erupted in civil war on April 12, 1861, when Confederate artillery opened fire on this Federal fort in Charleston Harbor. Fort Sumter surrendered 34 hours later. Union forces would try for nearly four years to take it back.
April 12,1861 â¦ âBATTLE OF FT SUMTERâ . HIstoric beginning of the Civil War as Ft. Sumter in Charleston harbor, S. Carolina is shelled at 4:30 a.m. in our Civil War Timeline. Ft Sumter surrenders approximately 36 hours later.Istoric beginning of the Civil War as Ft. Sumter in Charleston harbor, S. Carolina is shelled at 4:30 a.m. in our Civil War Timeline. Ft Sumter surrenders approximately 36 hours later.