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It is also known as the stiffness to weight ratio or specific stiffness. High specific modulus materials find wide application in aerospace applications where minimum structural weight is required. The dimensional analysis yields units of distance squared per time squared.
1 rebuilt under conversion to unrebuilt specifications The SR Merchant Navy class (originally known as the 21C1 class , and later informally known as Bulleid Pacifics , Spam Cans – which name was also applied to the Light Pacifics – or Packets ) is a class of air-smoothed 4-6-2 (Pacific) steam locomotives designed for the Southern Railway ...
1:18 scale is a traditional scale (ratio) for models and miniatures, in which 18 units (such as inches or centimeters) on the original is represented by one unit on the model. Depending on application, the scale is also called two third inch scale since 1 foot is represented by 2/3 of an inch.
Weights and measures tend to reflect human scale, and many older systems of measurement featured units based directly on the dimensions of the body, such as the foot and the cubit. The metric system , which is based on precisely reproducible and measurable physical quantities such as the speed of light, still attempts to keep its base units ...
A unit increment of one kelvin is exactly 1.8 times one degree Rankine; thus, to convert a specific temperature on the Kelvin scale to the Rankine scale, x K = 1.8 x °R, and to convert from a temperature on the Rankine scale to the Kelvin scale, x °R = x /1.8 K. Consequently, absolute zero is "0" for both scales, but the melting point of ...
Diffusivity has dimensions of length 2 / time, or m 2 /s in SI units and cm 2 /s in CGS units. ... It is a function of pore diameter and the size of the diffusing ...
In 1939, E. H. Livesay reported from the footplate on the performance of No. 2004 Mons Meg on the early morning 'Aberdonian' non-stop from Edinburgh to Dundee – a train with gross weight of 320 tons. Peak speeds of over 60 mph were noted, with 55 mph on a 1 in 100 gradient, and an average speed of 44.25 mph (71.21 km/h).
Energy density differs from energy conversion efficiency (net output per input) or embodied energy (the energy output costs to provide, as harvesting, refining, distributing, and dealing with pollution all use energy). Large scale, intensive energy use impacts and is impacted by climate, waste storage, and environmental consequences.
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