atomic clocks - definition. What is atomic clocks
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%ما هو (من)٪ 1 - تعريف

FANTASY STORY BY JAMES THURBER
Golux; The Thirteen Clocks; The 13 Clocks (novel); Thirteen Clocks

Atomic clock         
  • A team of United States Air Force airmen carrying a rubidium clock
  • JILA's 2017 three-dimensional (3-D) quantum gas atomic clock consists of a grid of light formed by three pairs of laser beams. A stack of two tables is used to configure optical components around a vacuum chamber. Shown here is the upper table, where lenses and other optics are mounted. A blue laser beam excites a cube-shaped cloud of strontium atoms located behind the round window in the middle of the table. Strontium atoms fluoresce strongly when excited with blue light.
  • The heart of NIST's next-generation miniature atomic clock – ticking at high "optical" frequencies-- is this vapor cell on a chip, shown next to a coffee bean for scale.
  • [[Louis Essen]] (right) and Jack Parry (left) standing next to the world's first caesium-133 atomic clock <small>(1955)</small>
  • Simplified block diagram of typical commercial cesium beam frequency reference
  • Historical accuracy of atomic clocks from [[NIST]]
  • Space Passive Hydrogen Maser used in ESA Galileo satellites as a master clock for an onboard timing system
  • Hydrogen maser
  • publisher=[[National Science Foundation]]}}</ref>
  • Data points representing atomic clocks around the world that define International Atomic Time (TAI)
  • archive-date=1 April 2014}}</ref>
  • An experimental [[strontium]]-based optical clock
  • url-status=live }}</ref> The rack mounted units in the background are [[Microsemi]] (formerly HP) 5071A caesium beam clocks. The black units in the foreground are Microsemi (formerly Sigma-Tau) MHM-2010 hydrogen maser standards.
  • One of [[NIST]]'s 2013 pair of ytterbium optical lattice atomic clocks
  • A ytterbium lattice clock that uses photons to measure time precisely
EXTREMELY ACCURATE REFERENCE CLOCK USED AS A STANDARD FOR TIMEKEEPING
Atomic clocks; Atomic oscillator; Atomic Clock; Atomic second; Atomic Second; Cesium clocks; Atom clock; Atom clocks; Cesium fountain clock; Optical lattice clock; Optical lattice atomic clock; Optical Clock; Optical clock
An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms. It is based on atoms having different energy levels.
atomic clock         
  • A team of United States Air Force airmen carrying a rubidium clock
  • JILA's 2017 three-dimensional (3-D) quantum gas atomic clock consists of a grid of light formed by three pairs of laser beams. A stack of two tables is used to configure optical components around a vacuum chamber. Shown here is the upper table, where lenses and other optics are mounted. A blue laser beam excites a cube-shaped cloud of strontium atoms located behind the round window in the middle of the table. Strontium atoms fluoresce strongly when excited with blue light.
  • The heart of NIST's next-generation miniature atomic clock – ticking at high "optical" frequencies-- is this vapor cell on a chip, shown next to a coffee bean for scale.
  • [[Louis Essen]] (right) and Jack Parry (left) standing next to the world's first caesium-133 atomic clock <small>(1955)</small>
  • Simplified block diagram of typical commercial cesium beam frequency reference
  • Historical accuracy of atomic clocks from [[NIST]]
  • Space Passive Hydrogen Maser used in ESA Galileo satellites as a master clock for an onboard timing system
  • Hydrogen maser
  • publisher=[[National Science Foundation]]}}</ref>
  • Data points representing atomic clocks around the world that define International Atomic Time (TAI)
  • archive-date=1 April 2014}}</ref>
  • An experimental [[strontium]]-based optical clock
  • url-status=live }}</ref> The rack mounted units in the background are [[Microsemi]] (formerly HP) 5071A caesium beam clocks. The black units in the foreground are Microsemi (formerly Sigma-Tau) MHM-2010 hydrogen maser standards.
  • One of [[NIST]]'s 2013 pair of ytterbium optical lattice atomic clocks
  • A ytterbium lattice clock that uses photons to measure time precisely
EXTREMELY ACCURATE REFERENCE CLOCK USED AS A STANDARD FOR TIMEKEEPING
Atomic clocks; Atomic oscillator; Atomic Clock; Atomic second; Atomic Second; Cesium clocks; Atom clock; Atom clocks; Cesium fountain clock; Optical lattice clock; Optical lattice atomic clock; Optical Clock; Optical clock
¦ noun an extremely accurate type of clock which is regulated by the vibrations of an atomic or molecular system such as caesium or ammonia.
Chip-scale atomic clock         
  • The heart of NIST's next-generation miniature atomic clock -- ticking at high "optical" frequencies-- is this vapor cell on a chip, shown next to a coffee bean for scale.
SMALL FORM FACTOR ATOMIC CLOCK
Chip scale atomic clock
A chip scale atomic clock (CSAC) is a compact, low-power atomic clock fabricated using techniques of microelectromechanical systems (MEMS) and incorporating a low-power semiconductor laser as the light source. The first CSAC physics package was demonstrated at NIST in 2003, based on an invention made in 2001.

ويكيبيديا

The 13 Clocks

The 13 Clocks is a fantasy tale written by James Thurber in 1950, while he was completing one of his other novels. It is written in a unique cadenced style, in which a mysterious prince must complete a seemingly impossible task to free a maiden from the clutches of an evil duke. It invokes many fairy tale motifs.

The story is noted for Thurber's constant, complex wordplay, and his use of an almost continuous internal meter, with occasional hidden rhymes — akin to blank verse, but with no line breaks to advertise the structure. Other fantasy books by Thurber, such as Many Moons, The Wonderful O (published 1958), and particularly The White Deer, also contained hints of this unusual prose form, but here it becomes a universal feature of the text, to the point where it is possible to predict the word order for a given phrase (for example, "the Golux said" vs. "said the Golux") by looking at the pattern of emphasis in the preceding phrase.

By the time he wrote this book, Thurber was blind, so he could not draw cartoons for the book, as he had done with The White Deer five years earlier. He enlisted his friend Marc Simont to illustrate the original edition. The Golux is said to wear an "indescribable hat". Thurber made Simont describe all his illustrations, and was satisfied when Simont was unable to describe the hat. When it was reissued by Puffin Books, it was illustrated by Ronald Searle. The book has been reprinted by The New York Review Children's Collection, with original illustrations by Marc Simont and an introduction by Neil Gaiman.

أمثلة من مجموعة نصية لـ٪ 1
1. Industry could enjoy the regularity of atomic clocks without risking technological collapse on New Year‘s Eve.
2. Atomic clocks at that moment will read 23:5':60 before rolling over to all zeros.
3. But the atomic clocks by which the atomic age runs dont stretch.
4. But super–accurate caesium atomic clocks get out of sync with the rotation of the Earth.
5. The Giove–A satellite will test key new technologies such as on–board atomic clocks, signal generators and user receivers.