This Title Argues That The 11-year Sunspot Cycle Has Become The Third Most Important Natural Cycle Affecting Our Lives, After The Cycle Of Day And Night And The Cycle Of Seasons. The Aim Of This Book Is To Describe The Phenomenology Of This Cycle And To Discuss The Scientific Principles Required To Understand It. Arnab Rai Choudhuri. Includes Bibliographical References And Index. Mode Of Access: World Wide Web.