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 (
A locked padlock
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Radiation thermometers and blackbodies can be calibrated using a set of blackbodies. These blackbodies can vary in size and can be fixed-points of the ITS-90 or variable temperature blackbodies constructed using heatpipes or circulating fluids.