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Using his extensive measurements of the properties of gases, [6] [7] Mendeleev also calculated it with high precision, within 0.3% of its modern value. [ 8 ] The gas constant occurs in the ideal gas law: P V = n R T = m R s p e c i f i c T {\displaystyle PV=nRT=mR_{\rm {specific}}T} where P is the absolute pressure , V is the volume of gas, n ...
Here because is a multivalued function, the integral must be divided into 3 parts corresponding to the 3 real roots of the vdW equation in the form, (,) (this can be visualized most easily by imagining Fig. 1 rotated ); the result is a special case of material equilibrium. [62]
Boltzmann constant: The Boltzmann constant, k, is one of seven fixed constants defining the International System of Units, the SI, with k = 1.380 649 x 10 −23 J K −1. The Boltzmann constant is a proportionality constant between the quantities temperature (with unit kelvin) and energy (with unit joule). [3]
A non-SI, metric unit of length equal to 10 −10 metre, i.e. 1 ⁄ 10000000000 of a metre or 0.1 nanometre. The angstrom is commonly used in the natural sciences to express microscopic or atomic-scale distances, including the sizes of atomic nuclei, wavelengths of electromagnetic radiation, and lengths of chemical bonds (e.g. the covalent ...
The original lineup in a 1988 promo. From left: Jerry Cantrell, Sean Kinney, Mike Starr, Layne Staley. Before the formation of Alice in Chains, Layne Staley, a drummer at the time, [13] [14] landed his first gig as a vocalist when he auditioned to sing for a local glam metal band known as Sleze after receiving some encouragement from his stepbrother Ken Elmer.
[W 2] Wales is credited with defining the goal of making a publicly editable encyclopedia, [20] [W 3] while Sanger is credited with the strategy of using a wiki to reach that goal. [W 4] On January 10, 2001, Sanger proposed on the Nupedia mailing list to create a wiki as a "feeder" project for Nupedia. [W 5]
Direction determination refers to the ways in which a cardinal direction or compass point can be determined in navigation and wayfinding.The most direct method is using a compass (magnetic compass or gyrocompass), but indirect methods exist, based on the Sun path (unaided or by using a watch or sundial), the stars, and satellite navigation.
A pentacube puzzle or 3D pentomino puzzle, amounts to filling a 3-dimensional box with the 12 flat pentacubes, i.e. cover it without overlap and without gaps. Since each pentacube has a volume of 5 unit cubes, the box must have a volume of 60 units. Possible sizes are 2×3×10 (12 solutions), 2×5×6 (264 solutions) and 3×4×5 (3940 solutions ...