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The business continued in the post-war era and owned so much stock that when the Korean War started the military came to him for the optics needed to repair war-era systems. One official told him, "Gee, you have more optics than the Army!" [2] In 1948 they completed a new building and warehouse in Barrington and opened a retail store at the front.
One of 2012's Physics Nobelists, David J. Wineland, is a pioneer in exploiting the properties of a single ion held in a trap to develop clocks of the highest stability. [19] The development of the first optical clock was started at the National Institute of Standards and Technology in 2000 and finished in 2006. [20]
A temperature variation of only one degree in the range between 15 °C (59 °F) and 30 °C (86 °F), or a pressure variation of 3 mmHg, was calculated to provide energy for two days' operation for an early prototype, [3] while for a more recent Atmos 540 model the corresponding value has been computed as 4.3 days per °C.
A projection clock (also called ceiling clock) is an analogue or digital clock equipped with a projector that creates an enlarged image of the clock face or display on any surface usable as a projection screen, most often the ceiling. [1] The clock can be placed almost anywhere if only the projected image must be seen.
The Eastgate Clock, Chester is one of the most photographed clocks in England outside London. The Royal Liver Building Clock, Liverpool is Britain's largest clock face, and the largest electronically driven clocks in the UK. Salisbury Cathedral clock displays a model of the universe in miniature. The mechanism, dated at 1392 and still working ...
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The CSAC, the world's smallest atomic clock, is 4 x 3.5 x 1 cm (1.5 x 1.4 x 0.4 inches) in size, weighs 35 grams, consumes only 115 mW of power, and can keep time to within 100 microseconds per day after several years of operation. A more stable design based on the vibration of rubidium atoms was demonstrated by NIST in 2019. [5]
A Serie A match between ACF Fiorentina and Inter Milan was abandoned after a player collapsed on the field on Sunday at the Stadio Artemio Franchi in Florence, Italy.
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