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The activation energy Q takes a different value depending on whether the high or low temperature limit is being considered: it changes from a high value Q H at low temperatures (in the glassy state) to a low value Q L at high temperatures (in the liquid state). Common logarithm of viscosity against temperature for B 2 O 3, showing two regimes
Bessel functions describe the radial part of vibrations of a circular membrane.. Bessel functions, first defined by the mathematician Daniel Bernoulli and then generalized by Friedrich Bessel, are canonical solutions y(x) of Bessel's differential equation + + = for an arbitrary complex number, which represents the order of the Bessel function.
By an initial method by epidemiology, the incidence of parathyroid carcinoma is estimated at 1 in 6 million people per year, [11] giving a very low probability before taking any tests into consideration. In comparison, the probability that non-malignant primary hyperparathyroidism would have occurred at the same time as an unrelated non ...
Wikipedia has been criticized for allowing information about graphic content. [197] Articles depicting what some critics have called objectionable content (such as feces, cadaver, human penis, vulva, and nudity) contain graphic pictures and detailed information easily available to anyone with access to the internet, including children.
The Mach number (M or Ma), often only Mach, (/ m ɑː k /; German:) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound.
1,2-Dichlorobenzene, or orthodichlorobenzene (ODCB), is an aryl chloride and isomer of dichlorobenzene with the formula C 6 H 4 Cl 2.This colourless liquid is poorly soluble in water but miscible with most organic solvents.
Alloy steels divide into two groups: low and high alloy. The boundary between the two is disputed. Smith and Hashemi define the difference at 4.0%, [1]: 393 while Degarmo, et al., define it at 8.0%.
A comprehensive list of sports, including various physical activities and games.