What Does F-Stop Mean? In photography, an F-stop is the ratio of the focal length of the lens to the diameter of the aperture. The number is expressed as a fraction. F-stop is a dimensionless number and gives an important measure of the lens speed. Advertisements An F-stop is also ...
and is a dimensionless number. The acceleration factor reflects the acceleration effect of a certain acceleration stress level in the accelerated life test, which is a function of the acceleration stress. At present, there are roughly two types of research methods for acceleration factors: statistical...
Nominal pipe size (NPS) is a dimensionless mark of pipe size. It represents the standard pipe size when it has a specific size code without the inch symbol. For example, NPs 6 represents a pipe with an outside diameter of 168.3 mm. NPs is very loosely related to the inside diameter in...
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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...
A few German mathematicians named Richard Courant, Kurt Friedrichs, and Hans Lewy derived a stability condition for explicit time-marching solutions for partial differential equations in their original paper titled On the partial differential equations o
aProvide rice for guests to throw as the couple departs the reception. According to German tradition, the amount of rice that stays in the bride's hair is the number of children the two will have. Continue tradition by having the bride give a white ribbon to the driver of each vehicle ...
To understand the Reynolds number and its importance, it is necessary first to understand what it is and how to calculate it.
Note: Atomic mass is a dimensionless quantity. Since the atomic number of sodium is 11, it has got 1 electron in the valence shell. Therefore, the valency of sodium is 1. The number of protons is equal to the number of electrons in sodium. But when s...
Also known as: The mole ratio is also called themole-to-mole ratio. Mole Ratio Units Mole ratio units are either mole:mole or else it is a dimensionless number because the units cancel out. For example, it's fine to say a ratio of 3 moles of O2to 1 mole of H2is 3:1 or 3 mol...