sam samar
sam samar thanked ks aravind's answer
ADVANTAGES     1)Used in long distance communications such as in television,fax,internet etc     2)Used in television and radio broadcasting etc     3)Weather forcasting (i.e)  in prediction of rainfall,snowfall,storm etc     4)Agricultural monitoring(i.e)crop disease,crop failure.     5)Collecting  information about other planets,stars and other celestial bodies