Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
share
Email Facebook Twitter Google+ LinkedIn Comments

Federal Agencies Join in Air Safety Program

Photonics Spectra
Mar 1998
Despite the best efforts of air traffic controllers, pilots sometimes have to rely on old-fashioned visual sightings to avoid collisions.
Although red or white anticollision lights on planes provide a last defense, the field intensity measurements of the lights vary by as much as 30 percent. To provide more accurate intensity measurements of a flash that lasts only a split second, the Federal Aviation Administration has enlisted the National Institute of Standards and Technology to develop a calibration standard.
NIST physicists came up with a system that uses two independent calibration methods to produce a primary standard photometer system with an uncertainty of 0.6 percent. The institute is using the system to provide calibrations for reference photometers with the hope of improving uncertainty for field measurements to less than 10 percent.

defenseResearch & TechnologyTech Pulse

Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2018 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, info@photonics.com

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.