Area of a circle of Cnidus in the fifth century B.C. had found that the area of a disk is proportional to its radius squared. Archimedes used the tools of Euclidean geometry to show that the area inside a circle is equal to that of a right triangle whose base has the length of the circle's circumference and whose height equals the circle's radius in his book "Measurement of a Circle". The circumference is 2"r", and the area of a triangle is half the base times the height, yielding the area "r" for the disk. Prior to Archimedes, Hippocrates of Chios was the first
There Is a Light That Never Goes Out There Is a Light That Never Goes Out "There Is a Light That Never Goes Out" is a song by the English rock band the Smiths, written by guitarist Johnny Marr and singer Morrissey. Featured on the band's third studio album "The Queen Is Dead", it was not released as a single in the United Kingdom until 1992, five years after their split. It peaked at No. 25 on the UK Singles Chart. The song has received considerable critical acclaim; in 2014, "NME" listed "There Is a Light That Never Goes Out" as the 12th greatest song of all time.