Search results

...tice]] where the [[Polarizability|polarizabilities]] of two [[Atomic clock|atomic clock states]] have the same value, such that the [[Stark effect|AC Stark s ...en it comes to precise measurements of transition frequency such as atomic clocks, the temporal fluctuations of the laser optical intensity would then deteri ...

...internally they may operate at [[Second|9,192,631,770&nbsp;Hz]].<ref name='Atomic clock internal frequency'>{{cite web|url=https://www.bipm.org/utils/common/ ...

...for creating and distributing standard time scales such as [[International Atomic Time]] (TAI). The time difference between two clocks may be determined by simultaneously comparing each clock to a common refere ...

...ical, social and political changes since the 18th century include those on clocks, paper manufacture and weaving. There are displays of living and working pr * View into the Invisible: [[sub-atomic particle]]s, [[microsystem]]s and [[parasitism|parasites]] (2006/07) ...

Before there were clocks, time was measured by those physical processes<ref>For example, [[Galileo]] ...definition is based on the operation of a caesium [[atomic clock]]. These clocks became practical for use as primary reference standards after about 1955, a ...

...Madjid, "Logical synchronization: how evidence and hypotheses steer atomic clocks," Proc. SPIE 9123, Quantum Information and Computation XII, 91230T (22 May ...

|pages=126–27}}</ref> The first spring powered-clocks appeared in that century<ref name="White1966" /><ref>{{Cite book | title=History of the Hour: Clocks and Modern Temporal Orders ...

...e of the controlling role of weak interactions in [[radioactive decay]] of atomic isotopes to establish the chirality of the weak force. ...interactions that are symmetric under parity, such as electromagnetism in atomic and molecular physics, parity serves as a powerful controlling principle un ...

...nts, like [[time-of-flight]] and lifetime measurements in [[atomic physics|atomic]] and [[particle physics|high energy physics]], experiments that involve [[ ...nizer output can be used to capture system time from a counter. After 1327 clocks, the slow ramp returns to its starting point, and interpolator knows that t ...

==Electric clocks== ...=2020-10-16|website=Green Blog|language=en-US}}</ref> This is used by some clocks to accurately maintain their time. ...

...olute parameter, differing from general relativity's notion of independent clocks. Reconciling these two theories is known as the [[problem of time]]. As of ...day. Increasingly, personal electronic devices display both calendars and clocks simultaneously. The number (as on a clock dial or calendar) that marks the ...

In the system of [[atomic units]], which sets {{math|1=''e'' = ''m''{{sub|e}} = ''ħ'' = 4''πε''{{sub| ...7C |s2cid=2317589 }}</ref> For an electron orbiting an atomic nucleus with atomic number {{mvar|Z}} the relation is {{math| {{sfrac|{{var|m}}{{var|v}}{{sup|2 ...

...mple, are found to measure less time (run slower) when compared to similar clocks in space. This difference in elapsed time is a form of curvature called [[g == Atomic masses == ...

...site particles|composite particles]] such as [[hadron]]s, [[atomic nucleus|atomic nuclei]], and atoms.<ref name="merzbacher372">{{cite book |last=Merzbacher * Atomic nuclei have [[Spin quantum number#Nuclear spin|nuclear spin]] which may be ...

...clock located at each position in space). The 'observer' synchronizes the clocks according to their own reference frame.]] ...t its actual time were it to have been recorded by an idealized lattice of clocks.<ref name="Taylor"/>{{rp|17–22}} ...

|title=From Sundials to Atomic Clocks: Understanding Time and Frequency ...le, from a source to a distant detector) without some convention as to how clocks at the source and at the detector should be synchronized.<ref name=Hsu2/><r ...

...icroscopy|scanning probe microscopes]] including [[Atomic Force Microscopy|atomic force microscopes]] ...

...8/25/641835302/what-closing-a-government-radio-station-would-mean-for-your-clocks |publisher=National Public Radio, Weekend Edition |access-date=1 September ...ove the horizon over each point on Earth. Each satellite has an onboard [[atomic clock]] and transmits a continuous radio signal containing a precise time s ...

...]], which has myriad applications in [[optical fiber]] communication and [[atomic clock]]s. Another prospective application for such devices is to directly ...

...the first civilization to use timekeeping devices such as sundials, shadow clocks, and obelisks and successfully leveraged their knowledge of astronomy to cr ...ower]], developed after the [[Manhattan project]] which heralded the new [[Atomic Age]]. [[Rocket]] development led to long range missiles and the first [[sp ...