«Back to around the 2000 peak,» is one comment from a senior executive of NEC Tokin Corporation, a major user of tantalum, which has peculiar properties making it the best metal for switching electronic signals in small devices. (businessnews.com.au)
When such a photon collides with a sodium atom, the sodium's own peculiar properties allow it to absorb the photon's angular momentum. (sciencemag.org)