Just as space and time are, in that theory, different aspects of a more comprehensive entity called spacetime, energy and momentum are merely different aspects of a unified, four-dimensional quantity that physicists call four-momentum.
12.
As a dimensional quantity, the value of the gravitational constant and its possible variation will depend on the choice of units; in Planck units, for example, its value is " G " = 1 by definition.
13.
:: Strictly, one should only take logs of a dimensionless scalar, so in the original question you shouldn't really ever have ended up with an expression like d \ ln ( p ) / d ( 1 / T ) because you're taking logs of a dimensional quantity.
14.
Is there a known name for the generalization of perimeter and surface area to higher dimensions, which produces an ( " n " & minus; 1 )-dimensional quantity from an " n "-dimensional figure ? talk ) 14 : 43, 27 April 2016 ( UTC)
15.
Since the skewness and excess kurtosis are non-dimensional quantities ( as moments centered on the mean and normalized by the standard deviation ), they are independent of the parameters " a " and " c ", and therefore equal to the expressions given above in terms of " X " ( with support [ 0, 1 ] or ( 0, 1 ) ):
16.
It also shows how statistical graphs can be used to distort reality, for example by truncating the bottom of a line or bar chart, so that differences seem larger than they are, or by representing one-dimensional quantities on a pictogram by two-or three-dimensional objects to compare their sizes, so that the reader forgets that the images do not scale the same way the quantities do.
