enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Thermodynamic databases for pure substances - Wikipedia

   en.wikipedia.org/wiki/Thermodynamic_databases...

   The solid line refers to the entropy of strontium in its normal standard state at 1 atm pressure. The dashed line refers to the entropy of strontium vapor in a non-physical state. The standard entropy change for the formation of a compound from the elements, or for any standard reaction is designated Δ S ° form or Δ S ° rx .

3. Smoothed-particle hydrodynamics - Wikipedia

   en.wikipedia.org/wiki/Smoothed-particle...

   Smoothed-particle hydrodynamics (SPH) is a computational method used for simulating the mechanics of continuum media, such as solid mechanics and fluid flows. It was developed by Gingold and Monaghan [ 2 ] and Lucy [ 3 ] in 1977, initially for astrophysical problems.

4. State of matter - Wikipedia

   en.wikipedia.org/wiki/State_of_matter

   The term phase is sometimes used as a synonym for state of matter, but it is possible for a single compound to form different phases that are in the same state of matter. For example, ice is the solid state of water, but there are multiple phases of ice with different crystal structures, which are formed at different pressures and temperatures.

5. Mathematical formulation of the Standard Model - Wikipedia

   en.wikipedia.org/wiki/Mathematical_formulation...

   Standard Model of Particle Physics. The diagram shows the elementary particles of the Standard Model (the Higgs boson, the three generations of quarks and leptons, and the gauge bosons), including their names, masses, spins, charges, chiralities, and interactions with the strong, weak and electromagnetic forces.

6. Kinetic theory of gases - Wikipedia

   en.wikipedia.org/wiki/Kinetic_theory_of_gases

   Thus, the dynamics of particle motion can be treated classically, and the equations of motion are time-reversible. As a simplifying assumption, the particles are usually assumed to have the same mass as one another; however, the theory can be generalized to a mass distribution, with each mass type contributing to the gas properties ...

7. Boltzmann equation - Wikipedia

   en.wikipedia.org/wiki/Boltzmann_equation

   The general equation can then be written as [6] = + + (),. where the "force" term corresponds to the forces exerted on the particles by an external influence (not by the particles themselves), the "diff" term represents the diffusion of particles, and "coll" is the collision term – accounting for the forces acting between particles in collisions.

8. Stokes' law - Wikipedia

   en.wikipedia.org/wiki/Stokes'_law

   Note the minus sign in the equation, the drag force points in the opposite direction to the relative velocity: drag opposes the motion. Stokes' law makes the following assumptions for the behavior of a particle in a fluid: Laminar flow; No inertial effects (zero Reynolds number) Spherical particles; Homogeneous (uniform in composition) material

9. Particle size analysis - Wikipedia

   en.wikipedia.org/wiki/Particle_size_analysis

   This enables rapid measurement of a particle size distribution by an instrument, but does require some form of calibration or assumptions regarding the nature of the particles. Most often this includes the assumption of spherical particles, thus giving a result which is an equivalent spherical diameter. Thus, it is usual for measured particle ...