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Excel function for multi-criteria selection problems
...At the same time, our model can incorporate some user control by ranking of relative importance of the criteria. [...] decision makers only rank the relative importance of criteria, rather than specifying the degree of relativity. [...] [our model] does not require users with any optimization background."
Worldlines visualizes special relativity, as particles near lightspeed trace paths in a 3D slice of 4D Minkowski spacetime. Scenes illustrate time dilation, the twin paradox, length contraction, and Bell's spaceship paradox.
The Physics 3d Simulations Project, intends to be a educational tool, for helping science students understanding physics concepts of Classical Mechanics, Eletrodynamics, Chaos, Relativity and others.
Light Speed! is an OpenGL-based program which interactively illustrates the effects of special relativity on the appearance of moving objects. When an object accelerates beyond (roughly) two hundred million meters per second, these strange effects become