Search results
Results from the WOW.Com Content Network
This is a list of well-known dimensionless quantities illustrating their variety of forms and applications. The tables also include pure numbers , dimensionless ratios, or dimensionless physical constants ; these topics are discussed in the article.
Dimensionless quantities, or quantities of dimension one, [1] are quantities implicitly defined in a manner that prevents their aggregation into units of measurement. [ 2 ] [ 3 ] Typically expressed as ratios that align with another system, these quantities do not necessitate explicitly defined units .
Download as PDF; Printable version; ... Dimensionless quantities (2 C, 9 P) R. Ratios (11 C, ... Pages in category "Dimensionless numbers"
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
Nikolai Pavlovich Petrov's method of lubrication analysis, which assumes a concentric shaft and bearing, was the first to explain the phenomenon of bearing friction.This method, which ultimately produces the equation known as Petrov's Law (or Petroff's Law), is useful because it defines groups of relevant dimensionless parameters, and predicts a fairly accurate coefficient of friction, even ...
Although named for Edgar Buckingham, the π theorem was first proved by the French mathematician Joseph Bertrand in 1878. [1] Bertrand considered only special cases of problems from electrodynamics and heat conduction, but his article contains, in distinct terms, all the basic ideas of the modern proof of the theorem and clearly indicates the theorem's utility for modelling physical phenomena.
Download as PDF; Printable version; ... Pages in category "Dimensionless quantities of chemistry" The following 4 pages are in this category, out of 4 total ...
Martin Rees, in his book Just Six Numbers, [21] mulls over the following six dimensionless constants, whose values he deems fundamental to present-day physical theory and the known structure of the universe: N ≈ 10 36: the ratio of the electrostatic and the gravitational forces between two protons.