US stocks are broadly unchanged on Tuesday as investors digest stronger-than-expected retail sales data ahead of the start of the Federal Reserve meeting, with a policy decision due tomorrow. Retail..

A laser is usually constructed from two basic elements: a material that provides optical gain through stimulated emission and an optical cavity that partially traps the light. When the total gain in ...

Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...

Below we show a small example program that introduces the RandomEnvironment struct, which provides a high-level interface for sampling from distributions and calculating probabilities. It ...

This project is part of a presentation I did on Self-avoiding random walks. It contains the algorithms I used to generate and visualize Simple and Self avoiding random walks on 2, 3 and 4 dimensions.

Bruising happens when blood pools under the skin due to damage in blood vessels. Some medications and conditions can make you bruise easily. Bruises usually heal in about two weeks without treatment.

Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history. Free timed-entry passes are required for the Museum in DC.