Show variation noticed in sun suna rotation period the sun Is as fickle in most of its if characteristics as well supply your own simile it hats has been found however that this inconsistency Is probably a periodic function so that th sun will vary from maximum to minimum ID 16 its behavior over a fixed pa pa of years for example dr charles st SL john of the mount wilson observatory in california has bus discovered that the period of rotation of the sun ties has been increasing the sun in other words Is slowing down in 1870 1876 the equatorial speed of the suns was wa kilometers per second in 1915 it wits was and by 1028 1928 the suit sun had slowed down to kilometers per second it Is bell believed eved however that this decrease will not be c constant tout and that beginning la in 1929 the sun eti gradually pick up speed a again ga in un until 11 it reaches a maximum perl period ild of rotation within the next few years |