Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

A computer simulation of the complex way in which diamonds scatter light could change the way they are cut. The simulation shows how unconventional designs will look without having to experiment on ...

There really is no way to count the hours that have gone into creating the model railroad exhibit spanning two floors at the Black Diamond Society of Model Engineers. With the Bethlehem group's ...