Gamma ray

June 9, 2014 - 12:40pm

The FAA’s updated Advisory Circular AC 120-61B provides information to help air carriers augment–but not alter or amend–existing programs to inform crew members about radiation exposure. The AC explains the differences between the natural sources of radiation in the atmosphere as well as the average annual exposure a human experiences from those sources.

October 15, 2007 - 10:59am

Boise, Idaho-based Positron Systems has received a Small Business Innovative Research grant by the Office of Naval Research to enhance its Photon

October 3, 2007 - 12:17pm

How much would it be worth to be able to reliably predict the structural failure of any part or component of an aircraft long before any flaw becomes visible? To be able to discover that there would be a structural failure in the top of a fuselage, in a vertical stabilizer or even in a landing gear before there was any visible indication such as a crack?