Рет қаралды 959
When Jim Norris came to the National Bureau of Standards in the late 1970s as a high school student, he could have never imagined that for the next 45+ years, he would be responsible for building over 60 Standard Reference Photometers (SRPs) to measure ground-level ozone all over the planet. With retirement looming it's time to pass his knowledge to the next SRP builder, Peter Trask.
Read more about it at: www.nist.gov/blogs/taking-mea...