The NIST-F4 atomic clock, recently unveiled by the National Institute of Standards and Technology in Boulder, Colorado, is one of the most accurate timekeeping devices ever built on Earth. This clock ...

For a summary of the theory just previous to the development of the new methods the reader is referred to a lecture of the author, Atomic Theory and Mechanics,œ published In this periodical ...

The problem is that the half-reaction that produces oxygen, known as the oxygen evolution reaction (OER), is difficult and inefficient and takes more energy than predicted by theory. “It should ...

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