SINCE Moseley's discovery of the fundamental laws of the X-ray emission, it has become quite clear that the most simple and conclusive characteristic of a Chemical element is given by its X-ray ...

23jan7:00 pm8:00 pmPeriodic Tables - Heat and Health 101: The Impact of Heat on Our Bodies and Our Communities ...

Jean-Claude Bünzli sheds light on why europium — an element that is neither abundant in the Earth's crust nor involved in biological processes — has nevertheless attracted a great deal of ...

The links below take you to web pages where you can access PDF files of annual tide-tables. These can be printed for personal use or used in publications, subject to the conditions as stated on these ...

This site displays a prototype of a “Web 2.0” version of the daily Federal Register. It is not an official legal edition of the Federal Register, and does not replace the official print version or the ...