Question

What is magnitude of a quality

Answer 1

Answer:

The magnitude of a constant-quantity is a numeric value for the quantity given in terms of some unit-of-measure. ... Units of measure are scalar quantities, and magnitude is defined in terms of scalar multiplication.

for example: We say that speed is a scalar quantity, that means it has magnitude but not direction.

  That is the reason why we do not put any signs like + or - sign in speed

these signs that we put are nothing but magnitude only

Answer 2

Answer:

The degree of brightness of a star or other celestial body, measured on a logarithmic scale in which lower numbers mean greater brightness, such that a decrease of one unit represents an increase in brightness by a factor of 2.512.