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A related limitation, which is not always made explicit in physics texts, is that transcendental mathematical functions such as or should only be applied to arguments that are dimensionless; thus, for instance, if is a speed, then is not physically meaningful, but is (this particular quantity ...
The pipe size is specified by two dimensionless numbers, Nominal pipe size (NPS) Schedule number (SCH) The relationship between these numbers determines the inside diameter of the pipe. Stainless steel pipe size shall be determined by ASME b36.19, including outer diameter and schedule wall thicknes...
These parameters are dimensionless coefficients calculated as voltage ratios of incident and transmitted (or reflected) waves. The scattering matrix for a multiport network (n-port matrix) comprises S-parameters, with each parameter representing an input-output path in the circuit. Each parameter is ...
Tan δ and dissipation factor are calculated as ESR/XC and are essentially the same figure, though it should be noted that dissipation factor is usually expressed as a percentage, rather than as a simple dimensionless factor. Q is simply the reciprocal of Tan δ, or XC/ESR. Figure 2: A ...
In other words, optical density is the ability of a material to block light. Although it is calculated using criteria that have units of measurement, optical density itself is dimensionless and is not associated with any scientific unit.
Pearson's product-moment correlation coefficient measures the strength of linear association between two scale random variables that are assumed to follow a bivariate normal distribution. By convention, it is a dimensionless quantity and obtained by standardizing the covariance between two continuous variabl...
The decibel is a logarithmic measurement unit that expresses a physical quantity’s magnitude relative to areferencelevel. It is a dimensionless unit since it expresses a ratio of two quantities having the same units. Definition A decibel is used for the measurement of power or intensity. The ma...
Seems like the dictionary's values are given in SI units, except for molar quantities, which are standardized as kmol. That's interesting... Furthermore, the numbers are treated as dimensionless, and there is information about the units they're given in header files o...
A scalaris a quantity that is completely specified by its magnitude and has no direction. A scalar can be described either dimensionless, or in terms of some physical quantity. Examples of scalars are: mass, volume, distance, energy, and time. ...