Maybe you know I like numerical calculations, well I do. I think they are swell. VPython is my tool of choice. In the post Basics: Numerical Calculations I used vpython and excel to do something ...

With clocks, we measure the numerical order of a material change, i.e., motion running in space. There is no experimental evidence that clocks measure time. It is convenient to replace the concept of ...

Numerical integration has been used to investigate the adequacy of the lunar theory for high precision applications and to examine the problem of modelling the apparent departures of the lunar motion ...