An eye-catching animation of diffraction on which you can vary the wavelength and aperture width, and see the results as wave fronts, and as an intensity graph. Explanation includes the relevant equations. Use this with the double slits site. They're both
The equation of two-body non-rotating radial free-fall in Newtonian theory is formally identical to the one-body radial free-fall solution in Einstein's theory. This site derives the cycloidal form of this solution and it begins with Newton's inverse squa
Claude Louis Marie Henri Navier (1785 - 1836) is remembered today, not as the famous builder of bridges for which he was known in his own day, but rather for the Navier-Stokes equations of fluid dynamics. He worked on applied mathematics topics such as en
Maxwell's equations represent one of the most elegant and concise ways to state the fundamentals of electricity and magnetism. From them one can develop most of the working relationships in the field.
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