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Showing posts from September, 2014

Photons for inspiration, fuel -- and light!

Editor’s note: A green laser lighted the early career path of then-physics-graduate Eugene Arthurs, now CEO of SPIE, the international society for optics and photonics.Light from many sources continues to provide him with inspiration and direction, Dr. Arthurs writes in this blog post originally published in the International Year of Light blog, www.light2015blog.org.
Looking back, my career path was not determined by some grand plan, but rather by the beauty of the light from an argon ion laser in our Applied Physics department at Queen’s University Belfast. It wasn’t the science that the laser was bought for, Raman spectroscopy, or an understanding of how the laser would change the world, that drew me.
At the time I was soon to graduate with a physics degree – the first in my family history to get a science degree – and was interviewing with a local branch of IBM where my love of mathematics might give me an edge and where I might find stimulating work in Northern Ireland.
But fate …

Ozone layer is recovering, satellite data says

Worldwide action to phase out ozone-depleting substances has resulted in remarkable success, according to a new assessment by 300 international scientists released on 10 September. The stratospheric ozone layer, a fragile shield of gas that protects Earth from harmful ultraviolet light, is on track to recovery over the next few decades.

The most current ozone hole satellite data comes from the Ozone Monitoring and Profiler Suite (OMPS) instrument on the NASA-NOAA Suomi National Polar-orbiting Partnership satellite, known as Suomi NPP, and the Ozone Monitoring Instrument and Microwave Limb Sounder on NASA's Aura satellite. The full report will be available in early 2015.
Suomi NPP is part of NOAA’s next generation Joint Polar Satellite System (JPSS) constellation of polar-orbiting environmental satellites. Suomi NPP, launched in October 2011, provides continuity for NASA’s Earth Observing System (EOS) and is a bridge between NOAA’s legacy Polar Orbiting Environmental Satellites (P…