The following article on the legality of optical storage was written by and is reprinted with permission of Robert F. Williams, president, Cohasset Associates, Inc., a records management consulting ...
Tucked away in a vault in France is a weight made of platinum and iridium, diligently cared for by a team of highly trained specialists. Its sole purpose is to be, to sit and remain unchanging as the ...
Morning Overview on MSN
An optical clock sets a record, edging us toward a new second
Physicists are quietly rewriting one of the most basic units in science, using a new generation of optical clocks that can keep time so precisely they barely lose a beat over the age of the universe.
The National Institute of Information and Communications Technology (NICT) generated a real-time signal of an accurate time scale by combining an optical lattice clock and a hydrogen maser. The signal ...
IN NATURE of May 27, p. 678, Mr. A. Mallock suggests as a quantitative measure of “definition” in an optical instrument “the angular or linear size of the field of view compared with the smallest ...
Optical clocks have evaluated the latest 'one second' tick of the International Atomic Time (TAI) and provided these data for adjusting the tick rate of TAI. Optical clocks of the National Institute ...
A storage system that contains multiple optical drives that read and write the media simultaneously. Libraries may hold one disc per drive or have storage for any number of discs or cartridges that ...
Scientists have generated a real-time signal of an accurate time scale by combining an optical lattice clock and a hydrogen maser. The signal generated in this optical-microwave hybrid system ...
IN Mr. Mallock's letter on “Definition, Resolving Power and Accuracy,” published in NATURE of May 27 (vol. 109, p. 678), reference is made to the measurement of star images on eclipse plates, from ...
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