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Clock that monitors the resonant frequency of atoms
of optical clocks across six countries was reported — marking a major step towards establishing a global optical-time standard. Optical atomic clocks are
Atomic_clock
Type of atomic clock
Optical clocks are a subset of atomic clocks and are based on transitions that emit electromagnetic radiation in the range of 200 nm to 1000 nm. Optical
Optical_clock
Type of atomic clock
molecular, and optical (AMO) physics, an optical lattice clock is a type of atomic clock that uses neutral atoms confined in an optical lattice, which
Optical_lattice_clock
Extremely accurate clock concept
A nuclear clock or nuclear optical clock is an atomic clock being developed that will use the energy of a nuclear isomeric transition as its reference
Nuclear_clock
SI unit of time
Atomic Time. These caesium clocks also underpin optical frequency measurements. Optical clocks are based on forbidden optical transitions in ions or atoms
Second
Type of clock with laser-cooled single ions
the aluminum-based quantum clock and the mercury-based optical atomic clock track time by the ion vibration at an optical frequency using a UV laser,
Quantum_logic_clock
unveils first optical clock". English News. Xinhuanet. Archived from the original on 2012-07-15. Retrieved 2013-02-04. "Caesium Beam Atomic Clock". The Government
List_of_atomic_clocks
Chemical element with atomic number 88 (Ra)
} ground state that could serve as the clock transition in an optical clock. A 226Ra+ trapped ion atomic clock has been demonstrated on the 7 s 2 S
Radium
Measured time difference as explained by relativity theory
speeds of less than 10 metres per second using optical atomic clocks connected by 75 metres of optical fiber. Minkowski diagram and twin paradox In the
Time_dilation
Canadian physicist
signals for optical clocks. Her efforts to create optical clocks have contributed to more accurate measurements of the second. Optical clocks use atoms (e.g
Tara_Fortier
quantity, magic frequency) is the wavelength of an optical lattice where the polarizabilities of two atomic clock states have the same value, such that the AC
Magic_wavelength
Effect that limits performance of advanced atomic clocks
limitation to frequency stability for modern atomic clocks such as atomic fountains and optical lattice clocks. It is an aliasing effect: High frequency noise
Dick_effect
Cooling technique in atomic physics
spectroscopy, allowing for high precision measurements and instruments such as optical clocks. The reduction in thermal energy also allows for efficient loading of
Laser_cooling
Topics referred to by the same term
controller, a system controller that does not use feedback Optical lattice clock, a type of optical clock The Oriental Land Company Search for "OLC" on Wikipedia
OLC
Atom-based system to determine relative location
and inexpensive quantum compass devices. Quantum clock Atomic clock Optical clock Nuclear optical clock Quantum metrology GPS jamming Chen, Sophia (2018)
Quantum_compass
Chemical element with atomic number 70 (Yb)
on several such optical clocks. The model with one single ytterbium ion caught in an ion trap is highly accurate. The optical clock based on it is exact
Ytterbium
Physical effect in general relativity
strontium-87 optical clock transition (429 THz, 698 nm) the group determined the gravitational redshift between the two optical clocks to be 21.18 Hz
Gravitational_redshift
Instrument for measuring, keeping or indicating time
A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals
Clock
Degree to which an optical system converges or diverges light
In optics, optical power (also referred to as dioptric power, refractive power, focal power, focusing power, or convergence power) is the degree to which
Optical_power
Time of day voice service
A speaking clock or talking clock is a live or recorded human voice service, usually accessed by telephone, that gives the correct time. The first telephone
Speaking_clock
State in southwest Germany
industry also extends beyond the region's borders, as does that of the optical, clock making, toy, metallurgy and electronics industries. The textile industry
Baden-Württemberg
Gigabit passive optical network system
and clock synchronization to ensure collision-avoidance in upstream transmission in the time-division multiple access (TDMA) from multiple optical network
GPON
Atomic-scale structure formed through the Stark shift by opposing beams of light
An optical lattice is formed by the interference of counter-propagating laser beams, creating a spatially periodic intensity pattern. The resulting periodic
Optical_lattice
British physicist
European project Robust Optical Clocks for International Timescales (ROCIT). In this capacity, she seeks to make optical clocks more robust, such that
Helen_Margolis
Laser source with equal intervals of spectral lines
are two distinct applications of this technique. One is the optical clock, where an optical frequency is overlapped with a single tooth of the comb on
Frequency_comb
Technology used to provide broadband to the end consumer via fiber
A passive optical network (PON) is a fiber-optic telecommunications network that uses only unpowered devices to carry signals, as opposed to electronic
Passive_optical_network
Small form factor atomic clock
based on all-optical excitation and a micro-machined containment vessel, US Patent 6,806,784 B2., retrieved 2018-10-10 "Miniaturized Atomic Clock to Support
Chip-scale_atomic_clock
General-relativistic effect
Chou, D. B. Hume, T. Rosenband, D. J. Wineland (24 September 2010), "Optical clocks and relativity", Science, 329(5999): 1630–1633; [1] Shapiro, I. I.;
Gravitational_time_dilation
Test of relativistic time dilation
id=time-dilation Chou, C. W.; Hume, D. B.; Rosenband, T.; Wineland, D. J. (2010). "Optical Clocks and Relativity". Science. 329 (5999): 1630–1633. Bibcode:2010Sci...329
Hafele–Keating_experiment
advances in automotive engines, television display technology, videogames, optical clocks, and many other fields. Japan is also advanced and a global leader in
Science and technology in Japan
Science_and_technology_in_Japan
Laser-cooled atoms in flight
cloud is cooled and pushed upwards by counter-propagating lasers in an optical molasses configuration. The atomic transition is measured precisely with
Atomic_fountain
Tower-based signaling network
An optical telegraph is a line of stations, typically towers, for the purpose of conveying textual information by means of visual signals (a form of optical
Optical_telegraph
SI unit of frequency
National Research Council of Canada: Optical frequency comb (archived 27 June 2013) National Physical Laboratory: Time and frequency Optical atomic clocks
Hertz
Atoms kept at temperatures close to absolute zero
popularity owing to narrow-linewidth cooling transitions and ultra-narrow optical clock transitions. Ultracold atoms have a variety of applications owing to
Ultracold_atom
British physicist
leading-edge optical atomic clocks that look to form the basis of a future redefinition of the SI base unit second. These include optical clocks based on
Patrick_Gill_(physicist)
Mechanical device for measuring lenses
the result as an optical power in diopters, assuming the lens is made of a material with a particular refractive index. The lens clock has three pointed
Lens_clock
National inter-university research center in Poland
strontium optical lattice atomic clocks are operating at the KL FL FAMO. Together with optical frequency combs they form the Polish Optical Atomic Clock (POZA)
National Laboratory of Atomic, Molecular and Optical Physics
National_Laboratory_of_Atomic,_Molecular_and_Optical_Physics
Visually perceived images that differ from objective reality
In visual perception, an optical illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by a visual percept
Optical_illusion
Electronic signal to synchronize circuits
Important areas of research include resonant clocking techniques ("resonant clock mesh"), on-chip optical interconnect, and local synchronization methodologies
Clock_signal
Nearby white dwarf star in the constellation Leo Minor
has been claimed to be the most stable optical clock ever found, much more stable than the ticks of an atomic clock. It is also the first pulsating white
G_117-B15A
Dimensionless number that quantifies the strength of the electromagnetic interaction
Rosenband et al. used the frequency ratio of Al+ and Hg+ in single-ion optical atomic clocks to place a very stringent constraint on the present-time temporal
Fine-structure_constant
American physicist (born 1934)
for their pioneering work on laser-based precision spectroscopy and the optical frequency comb technique. The other half of the prize was awarded to Roy
John_L._Hall
Standardized digital audio interface
physical layer specifications for carrying digital audio signals over either optical or electrical cable. The name stands for Sony/Philips Digital Interconnect
S/PDIF
Standardized protocol
Synchronous Optical Networking (SONET) and Synchronous Digital Hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously
Synchronous optical networking
Synchronous_optical_networking
Japanese physicist
having invented the magic wavelength technique for ultra precise optical lattice atomic clocks. Since 2011, Katori is also Chief Scientist at the Quantum Metrology
Hidetoshi_Katori
Brazilian astrophysicist
white dwarf star, G117-B15A, as the most stable known optical clock, more stable than an atomic clock. The team's findings were published in The Astrophysical
Kepler_de_Souza_Oliveira
same as the individual received optical packet in a short locking time, for example within 40 ns. Such generated local clock can in turn perform correct data
Burst mode clock and data recovery
Burst_mode_clock_and_data_recovery
Science of measuring the shape, orientation, and gravity of Earth
using the special-relativistic concept of time dilation as gauged by optical clocks. Geographical latitude and longitude are stated in the units degree
Geodesy
predictable timing Reduction of power and area for clock distribution Distance independence of performance of optical interconnects No frequency-dependent Cross-talk
Optical_interconnect
American professor of Applied Physics at the California Institute of Technology
Forman Team Engineering Excellence Award from the Optical Society for the '2-photon optical clock collaboration', and is a member of the National Academy
Kerry_Vahala
advances in automotive engines, television display technology, videogames, optical clocks, and many other fields. Japan is also advanced and a global leader in
Economy_of_Japan
Flexible optical fiber bundle with an eyepiece on one end and a lens on the other
A fiberscope is a flexible optical fiber bundle with a lens on one end and an eyepiece or camera on the other. It is used to examine and inspect small
Fiberscope
Universal and unchanging physical quantity
Rosenband, T.; et al. (2008). "Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place". Science. 319 (5871): 1808–12
Physical_constant
1938 experiment confirming relativistic time dilation
spectroscopy or optical–optical double resonance. Due to their frequencies emitted, these ions can be considered as optical atomic clocks of high precision
Ives–Stilwell_experiment
Colombian physicist (born c. 1976)
jila.colorado.edu. Retrieved 2020-11-05. "Tying Quantum Knots with an Optical Clock | Rey Theory Group". jila.colorado.edu. Retrieved 2020-11-05. "Phases
Ana_Maria_Rey
Opaque or translucent, milk white or colored glass
famous use of milk glass is for the four faces of the information booth clock at Grand Central Terminal in New York City. Barbetta, the New York Italian
Milk_glass
Capturing of human-marked data from document forms
Optical mark recognition (OMR) collects data from people by identifying markings on a paper. OMR enables the hourly processing of hundreds or even thousands
Optical_mark_recognition
German physicist (born 1941)
to the development of laser-based precision spectroscopy, including the optical frequency comb technique", sharing the prize with John L. Hall and Roy
Theodor_W._Hänsch
Multichannel digital audio interface
The ADAT Lightpipe, officially the ADAT Optical Interface, is a standard for the transfer of digital audio between equipment. It was originally developed
ADAT_Lightpipe
Chinese-American physicist
Colorado Boulder, working primarily in the field of atomic, molecular, and optical physics. Ye was born in Shanghai, China, shortly after the beginning of
Jun_Ye
Device that amplifies an optical signal
An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier
Optical_amplifier
German physicist
Keller & T. E. Mehlstäubler (2012), "Linear Paul trap design for an optical clock with Coulomb crystals", Appl. Phys. B, vol. 107, no. 4, pp. 891–906
Tanja_Mehlstäubler
Technical applications of optics
practical semiconductor light emitters invented in the early 1960s and optical fibers developed in the 1970s. The field is also supported by professional
Photonics
Constellation in the northern celestial hemisphere
McDonald Observatory (5 December 2005). "Astronomers Find Most Stable Optical Clock in Heavens; Aids Understanding of Stars' Lives". Phys.Org. Archived
Leo_Minor
Transmitting information over optical fiber
of optical communication for transmitting information from one place to another by sending pulses of infrared or visible light through an optical fiber
Fiber-optic_communication
Family of digital modulation methods
be self-clocking. But the sender and receiver of a quadrature-modulated signal must share a clock or otherwise send a clock signal. If the clock phases
Quadrature amplitude modulation
Quadrature_amplitude_modulation
Spreading the frequency domain of a signal
is driven by a clock signal and, because of its periodic nature, has an unavoidably narrow frequency spectrum. In fact, a perfect clock signal would have
Spread_spectrum
Device for trapping charged particles
J. C. Bergquist (2008). "Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place" (PDF). Science. 319 (5871): 1808–1812
Ion_trap
Device that records working hours
A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees
Time_clock
EnFocus Intraoperative Optical Coherence Tomography Development Team 2021 Infinera's Optical Innovation Team 2020 2-Photon Optical Clock Collaboration 2019
Paul F. Forman Team Engineering Excellence Award
Paul_F._Forman_Team_Engineering_Excellence_Award
Film transition in which a shot replaces another by traveling across the screen
move it across the screen. The opening frames of the next scene were optically printed onto this object, so that—when the object entirely filled the
Wipe_(transition)
American physicist
demonstrated the self-referenced optical frequency comb and subsequently used it to realize the first optical clocks. Throughout his career, he has continued
Scott_Diddams
Topics referred to by the same term
in cesium beam atomic clocks on airplanes. Hughes–Drever experiment, comparing energy levels of nucleons or electrons Optical cavity tests, comparing
Clock-comparison_experiment
Hypothetical conflict with the laws of physics as currently known
Rosenband, T.; et al. (2008). "Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place". Science. 319 (5871): 1808–12
Time-variation of fundamental constants
Time-variation_of_fundamental_constants
Tests of special relativity
1103/PhysRevLett.85.5038. PMID 11102181. S2CID 41363493. Chou; et al. (2010). "Optical Clocks and Relativity". Science. 329 (5999): 1630–1633. Bibcode:2010Sci...329
Modern searches for Lorentz violation
Modern_searches_for_Lorentz_violation
Atomic clock
with the NIST-F1 clock. The most recent contribution of NIST-F1 to BIPM TAI was in March 2016. The apparatus consists of an optical molasses made of counter-propagating
NIST-F1
12942/lrr-2003-1. PMC 5253894. PMID 28163638. "Gravitational Physics with Optical Clocks in Space" (PDF). S. Schiller (PDF). Heinrich Heine Universität Düsseldorf
Tests_of_general_relativity
American telecommunications equipment company
across a 184 km system. Optical cesium atomic clocks: Adtran's Oscilloquartz division has introduced atomic clocks that leverage optical pumping technology
Adtran
Electric light bulb with a resistively heated wire filament
intended for use in optical systems have bases with alignment features so that the filament is positioned accurately within the optical system. A screw-base
Incandescent_light_bulb
Unit of measurement of optical power
one reciprocal metre, 1 dpt = 1 m−1. It is normally used to express the optical power of a lens or curved mirror, which is a physical quantity equal to
Dioptre
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
Projection_clock
Primary frequency standard
caesium-133 atoms is used to control the output frequency. The first caesium clock was built by Louis Essen in 1955 at the National Physical Laboratory in
Caesium_standard
Type of computer memory
the rising and falling edges of the clock signal, effectively doubling the data rate without increasing the clock frequency. This technique, known as
DDR_SDRAM
German award
2014 Conferred on Philip Russell". Erlangen Graduate School in Advanced Optical Technologies. 2 January 2014. Retrieved 12 October 2023. "Mourou and Toptica
Berthold Leibinger Zukunftspreis
Berthold_Leibinger_Zukunftspreis
Data transfer channel connecting parts of a computer
computer or between computers. It encompasses both hardware (e.g. wires, optical fiber, bus slots) and software, including communication protocols. At its
Bus_(computing)
Optical aberration
An optical system with astigmatism is one where rays that propagate in two perpendicular planes have different foci. If an optical system with astigmatism
Astigmatism_(optical_systems)
López-Urrutia, J. R.; Schmidt, P. O. (2018-12-04). "Highly charged ions: Optical clocks and applications in fundamental physics". Reviews of Modern Physics
Main Magnetic Focus Ion Source
Main_Magnetic_Focus_Ion_Source
The manipulation of atoms using optical fields is a vital and fundamental area of research within the field of atomic physics. This research revolves
Optical_manipulation_of_atoms
Long distance transmission of text
earliest true telegraph put into widespread use was the Chappe telegraph, an optical telegraph invented by Claude Chappe in the late 18th century. The system
Telegraphy
Time zone observed in India; UTC+05:30
and Guwahati—the reference time from NavIC will be transmitted via an optical fibre link from the Faridabad centre. Indian Standard Time must be used
Indian_Standard_Time
2025 mobile operating system
introduced in iOS 7 to utilize rounded, translucent elements with the "optical qualities of glass" (including refraction), which react to motion, content
IOS_26
including clocks, watches, sundials, and optical astronomical instruments, cameras and old photographic equipment. Despite the title of Clock Museum, the
Przypkowscy_Clock_Museum
Ethernet standards that carry data at the nominal rate of 100 Mbit/s
extension of the 10-megabit Ethernet standard. It runs on twisted pair or optical fiber cable in a star wired bus topology, similar to the IEEE standard
Fast_Ethernet
Foremost astronomical observatory of France
Observatoire de Paris." M. Abgrall; et al. (June 2015). "Atomic fountains and optical clocks at SYRTE: status and perspectives". Comptes Rendus Physique. 16 (5):
Paris_Observatory
Scientific agency in the United States
In 1893 it was moved to its Northwest DC location. In 1934, the largest optical telescope installed at USNO saw "first light". This 40 inch aperture instrument
United States Naval Observatory
United_States_Naval_Observatory
than optical and ion clocks, allowing for much lower systematic uncertainty in the clock frequency. Clockmaker – Artisan who makes and repairs clocks Clock
History of timekeeping devices
History_of_timekeeping_devices
Movement of goods or people between locations
century saw several inventions fundamentally change transport. With the optical telegraph, communication became rapid and independent of the transport
Transport
with double star, though the latter can also refer to an optical double star, a type of optical illusion which is entirely distinct from true binary star
Glossary_of_astronomy
American scientist and engineer (1882–1953)
atomic clocks, Science, Vol. 91, Issue 2352, pp. 79–84 (1940) H.E.Ives, Historical note on the rate of moving atomic clock, Journal of the Optical Society
Herbert_E._Ives
Devices for observing, measuring or recording astronomical data
astronomical clock: medieval astronomical clock in the Czech Republic Quadrant: navigation instrument Reticle: aim markings in optical devices, e.g.
List of astronomical instruments
List_of_astronomical_instruments
OPTICAL CLOCK
OPTICAL CLOCK
Surname or Lastname
Irish
Irish : variant spelling of Noone.English, Scottish, and Dutch : from Middle English none, Middle Dutch noene ‘noon’, the time of brightest sunshine, hence perhaps nickname for a bright and cheerful person or for someone born at that time of day. The word is derived from Latin nona (hora) ‘ninth (hour)’, i.e. about three o’clock. The change in meaning of the vocabulary word from mid-afternoon to midday, probably occurred as a result of monastic meal times being brought forward.
Girl/Female
Muslim
Clock
Girl/Female
Indian
Optional
Girl/Female
Arabic, Muslim
Clock
Boy/Male
Indian, Malayalam
Clock
OPTICAL CLOCK
OPTICAL CLOCK
Boy/Male
Tamil
Passionate, Endowed with zest for life and its pleasures, Mastery, Fame, Pride
Male
Egyptian
, Arkamun.
Boy/Male
Indian, Kannada, Marathi, Tamil
Intellectual
Girl/Female
Muslim
Strength
Boy/Male
Arabic Muslim
One who serves a kind man.
Boy/Male
Tamil
Devadatta | தேவததà¯à®¤à®¾
Given by God
Surname or Lastname
English
English : variant of Barlow.
Girl/Female
Muslim
Quail. Solace. Consolation.
Boy/Male
Christian & English(British/American/Australian)
Relic
Girl/Female
Indian
Smile, Happiness
OPTICAL CLOCK
OPTICAL CLOCK
OPTICAL CLOCK
OPTICAL CLOCK
OPTICAL CLOCK
n.
The space covered by an optical instrument at one view.
a.
Belonging to, or consisting of, bark or rind; resembling bark or rind; external; outer; superficial; as, the cortical substance of the kidney.
n.
An optical glass; a telescope.
n.
Of or pertaining to the science of vision; optical.
a.
Alt. of Optical
a.
Topical.
n.
An optical glass that is convex on both sides.
n.
Of or pertaining to a place; limited; logical application; as, a topical remedy; a topical claim or privilege.
a.
Involving an option; depending on the exercise of an option; left to one's discretion or choice; not compulsory; as, optional studies; it is optional with you to go or stay.
a.
Of or pertaining to a vortex or vortexes; resembling a vortex in form or motion; whirling; as, a vortical motion.
a.
Of or pertaining to vision or sight.
adv.
By optics or sight; with reference to optics.
a.
Relating to the science of optics; as, optical works.
a.
One skilled in optics.
n.
An optical toy similar to the phenakistoscope. See Phenakistoscope.
a.
One who deals in optical glasses and instruments.
a.
Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. See Illust. of Brain, and Eye.
n.
A reflecting optical glass or instrument; a mirror.
n.
An instrument for showing the optical effects of color.
a.
Expressed in metrical form; exhibiting the imaginative or the rhythmical quality of poetry; as, a poetical composition; poetical prose.