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Scaling (geometry) In affine geometry, uniform scaling (or isotropic scaling[ 1]) is a linear transformation that enlarges (increases) or shrinks (diminishes) objects by a scale factor that is the same in all directions. The result of uniform scaling is similar (in the geometric sense) to the original. A scale factor of 1 is normally allowed ...
One of the smallest gauges on which a live steam engine can pull a passenger is the now almost defunct 2 + 1 ⁄ 2-inch gauge. The next largest scale range, G scale (1:22.5) in the US and 16 mm scale (1:19.05) in the UK, and as large as 1:12 scale, is too small for riding but is used for outdoor garden railways, which allow use of natural ...
List of dimensionless quantities. 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.
2mm scale / British N scale railway modeling. 1:150: 2.032 mm: Model railways (Japanese N) Used by Heller for model ships, and proposed by the Japanese to supersede 1:144 scale trains. Models which are commonly made in scale at 1:150 are commercial airliners - such as the Airbus A320, Boeing 777 all the way to the jumbo jets - the Airbus A380 ...
Scale factor (cosmology) The expansion of the universe is parametrized by a dimensionless scale factor . Also known as the cosmic scale factor or sometimes the Robertson–Walker scale factor, [1] this is a key parameter of the Friedmann equations . In the early stages of the Big Bang, most of the energy was in the form of radiation, and that ...
The Model 1 + 1 ⁄ 2 had three issues. The first two (known as the first and second issues) were "tip-up" revolvers with the barrel release catch located on the side of the frame in front of the trigger, while the third (known as the "Model 1 + 1 ⁄ 2 Single Action Revolver") was a "top-break", with the barrel release catch located on the top of the frame, just in front of the hammer.
The Reagan administration made Letter-size paper the norm for US federal forms in the early 1980s; previously, the smaller "official" Government Letter size, 8 by 10.5 inches (203.2 by 266.7 mm) (aspect ratio: 1.3125), was used in government, while 8.5-by-11-inch (215.9 by 279.4 mm) paper was standard in most other offices. [2]
In computer science, a scale factor is a number used as a multiplier to represent a number on a different scale, functioning similarly to an exponent in mathematics. A scale factor is used when a real-world set of numbers needs to be represented on a different scale in order to fit a specific number format. Although using a scale factor extends ...