Talk:Physics with Calculus/Mechanics/Scalar and Vector Quantities

WHAT are two types of quantities? what are two types of measurement?

Re: Vector quantities
IT IS BETTER TO DEFINE A SCALAR TO BE A QUANTITY THAT REMAINS INVARIANT UNDER ADMISSIBLE CO-ORDINATE TRANSFORMATION DECTATED BY THE CONCEPTUAL STRUCTURE OF THINKING.TO BE MORE EXPLICIT,CONSIDER THE EQUATION M=M(0)/square rootof(1-v squared/c squared).here M(0)IS A SCALAR QUANTITY;BUT M IS NOT A SCALAR QUANTITY.IT MAY BE VIEWED AS ONE OF THE COMPONENT OF ENERGY-MOMENTUM 4- VECTOR.IT IS ALWAYS BETTER TO SAY THAT SCALAR IS A TENSOR OF ZERO RANK.ALSO IT IS ALWAYS SAFE TO SAY THAT A VECTOR IS AN ELEMENT BELONGING TO A VECTOR SPACE OVER THE FIELD OF REAL NUMBERS.(if we are dealing with real linear vectorspace). (Text added 14 Oct 2009 by user 117.206.48.42 )