An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Procedures are described, in this pedagogical monograph, for making quantum mechanical calculations of rotational energy levels and rotational line intensities
Gage blocks are the primary method used by industry to standardize the measurement of dimension. This work discusses every aspect of gage block calibration
This report summarizes a large number of investigations designed to characterize the formation of carbon monoxide (CO) in enclosures fires - the most important