TAURUS

(Lat. the Bull.) In Astronomy, the second in order of the twelve zodiacal constellations. There are several remarkable stars in this constellation: Aldebaran, of the first magnitude, in the eye; the well-known cluster called the Pleiades, in the neck; and the Hyades, in the face. See Constellation, Zodiac. time),TAUTOCHRONE in Mechanics, is (Yunanca köken — orijinale bakınız.) Newton and Hermann also determined the tautochrone in a vacuum, when gravity is supposed to be directed towards a given centre. Newton likewise showed that the cycloid is also the tautochrone in a resisting medium, when the resistance is proportional to the velocity (Principia, b. ii., prop. 26); and Euler first determined the nature of the curve when the resistance is proportional to the square of the velocity (Mechanic a vol ii ) See also Joh. Bernoulli, Opera, vol. Hi. ' [s. 1232]