Sentences with phrase «niobium spheres»
After 49 years and $ 750 million, a Stanford University experiment using superconducting niobium spheres confirmed parts of Einstein's general theory of relativity.
https://www.scientificamerican.com/ Not exact matches
Each one is a quartz sphere the size of a Ping - Pong ball, smooth to within a millionth of an inch and coated with the metal niobium, which is superconducting at liquid helium temperatures.
However, trapped charges in the niobium made the gyroscopes far less round electrically; an Earth - sized map of a sphere's voltage landscape would sport peaks as high as Mount Everest.