"GENERAL THEORY OF RELATIVITY "(1)

GENERAL THEORY OF RELATIVITY (GTR) IS ONE THE GREATEST INTELLECTUAL ACHIEVEMENTS IN HUMAN HISTORY. IT COULD BE THOUGHT TO BE A GENERALIZATION OF SPECIAL THEORY OF RELATIVITY(STR).IT WAS AN "ONE MAN SHOW"OF GREAT EINSTEIN.STR REJECTED NEWTONIAN CONCEPTS OF ABSOLUTE SPACE AND ABSOLUTE TIME WHICH WERE THOUGHT TO BE TWO INDEPENDENT PHYSICAL REALITIES.THE REJECTION OF NEWTONIAN CONCEPTS HAS THE CONSEQUENCE OF IMPOSSIBILITY OF DEFINING THE CONCEPT OF ABSOLUTE VELOCITY.MEANWHILE THE "MICHAELSON - MORLEY EXPERIMENTS" SHOWED THAT C+U=C AND C-U=C WITH "U "NOT EQUAL TO ZERO IF C IS THE VELOCITY OF LIGHT IN FREE SPACE.THIS WAS MATHEMATICALLY IRRATIONAL EVEN OF NATURE OFTHOUGH PHYSICALLY RATIONAL.SO EINSTEIN REDEFINED THE CONCEPT OF ADDITION OF VELOCITIES BY INTRODUCING A"BINARY OPERATION( +*)" IN VELOCITY VECTOR SPACE "V" IN THE FOLLOWINGLNER WAY. (+*):V×V------->V SUCH THAT {U+A/1+UA/ C^2.}.HERE V IS A SUBSET OF VELOCITY VECTOR SPACE, SUCH THAT IT IS A SET OF ONLY PARALLEL VELOCITY VECTOR SPACE CONSTITUTED ONLY BY PARALLEL VELOCITY VECTOR FIELD.ONLY RELATIVE MOTION IS AN ABSOLUTE REALITY.

THERE DOES EXIST A SPECIAL CLASS OF REFERENCE FRAME CALLED INERTIAL FRAME OF REFERENCE IN WHICH “LAW OF INERTIA”IS TRUE. SPECIAL THEORY OF RELATIVITY IS CONCERNED WITH INERTIAL FRAMES OF REFERENCE.INERTIAL FRAMES MOVE RELATIVE ONE ONE ANOTHER WITH UNIFORM VELOCITIES.SPECIAL THEORY OF RELATIVITY SAYS THAT ALL INERTIAL FRAMES OF REFERENCE ARE BOTH MATHEMATICALLY AND PHYSICALLY EQUIVALENT TO THE FORMULATION OF FUNDAMENTAL LAWS OF NATURE.THUS A PARTICLE HAVING ZERO ACCELERATION IN ONE INERTIAL SYSTEM HAS THE SAME PROPERTY IN ALL INERTIAL COORDINATE SYSTEMS.SIMILARLY A PARTICLE HAVING “NON-ACCELERATION”HAS THE SAME PROPERTY IN ALL INERTIAL COORDINATE SYSTEMS.THIS IMPLIES THAT ‘’ACCELERATION CONTINUES TO AN ABSOLUTE MEANING IN SPECIAL MEANING IN STR.