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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
Extremely accurate clock in development
A nuclear clock or nuclear optical clock is an atomic clock which uses photons from a nuclear isomeric transition as its reference frequency, instead
Nuclear_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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)
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
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
predictable timing Reduction of power and area for clock distribution Distance independence of performance of optical interconnects No frequency-dependent Cross-talk
Optical_interconnect
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
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
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
American theoretical physicist
study of fundamental symmetries, atomic clocks, searches for the variation in fundamental constants, optical cooling and trapping of neutral atoms, and
Marianna_Safronova
Signal used to represent data as a sequence of discrete values
clock signal is a special digital signal that is used to synchronize many digital circuits. The image shown can be considered the waveform of a clock
Digital_signal
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
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
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
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
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
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
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
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
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
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
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
Type of data transfer
serializer and deserializer, or SerDes) and to outstrip its disadvantages (clock skew, interconnect density). The migration from PCI to PCI Express (PCIe)
Serial_communication
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
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)
Model with atomic parity violation. Proposing an ytterbium optical lattice clock. These clocks have been realized in major metrology laboratories around
Andrei_Derevianko
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
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
Russian mechanic
clocks, miniature "clock-in-a-ring" types and others. He also worked on new ways to facet glass for use in microscopes, telescopes and other optical instruments
Ivan_Kulibin
Modular communications interface
types of transceivers as required, with the majority of devices including optical line terminals, network cards, switches and routers. The form factor and
Small_Form-factor_Pluggable
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
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
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
Standards for Ethernet at ten times the speed of Gigabit Ethernet
popular socket on 10GE systems. SFP+ modules do only optical to electrical conversion, no clock and data recovery, putting a higher burden on the host's
10_Gigabit_Ethernet
American scientist
earth element. Zelevinsky performed seminal work on the strontium optical lattice clock in the group of Jun Ye at JILA and was the first to use narrow-linewidth
Tanya_Zelevinsky
System for logging the rounds made by security guards and other patrolling staff
mechanical watchclock (also called a watchman's clock or patrol clock). The guard carried the clock on the round and, at each checkpoint, inserted and
Guard_tour_patrol_system
Israeli military drone, 2009
payload capability of 300 kg (660 lb). Payload options include electro-optical/infrared sensors, synthetic-aperture radar/ground-moving target indication
Elbit_Hermes_900
University in Pakistan
the lakes of Tarbela Dam and Ghazi. Clock Tower is a landmark of Ghulam Ishaq Khan, aka LoGIK in short. The clock tower can be seen from almost everywhere
Ghulam Ishaq Khan Institute of Engineering Sciences and Technology
Ghulam_Ishaq_Khan_Institute_of_Engineering_Sciences_and_Technology
Preservation of tangible objects
The conservation and restoration of clocks refers to the care given to the physical and functional aspects of time measuring devices featuring "moving
Conservation and restoration of clocks
Conservation_and_restoration_of_clocks
History of Apple's current Mac operating system
workstation to include a digital signal processor (DSP) and a high-capacity optical disc drive, NeXT hardware was advanced for its time, but was expensive
MacOS_version_history
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
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
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
American semiconductor company
Filters; Interfaces; Optical, Image, & Touch Sensors In 2013, the company introduced the industry's highest resolution optical image stabilization (OIS)
Onsemi
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
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
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
Indicator within an internal-combustion engine
term can also be used to describe the tick marks along the length of an optical mark recognition sheet in order to confirm the location of the sheet as
Timing_mark
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
crystal microbalances Melting-point apparatus Nitrogen laser Optical chopper Low-vibration optical shutters Vacuum gauges and controllers Residual gas analyzers
Stanford_Research_Systems
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
Electronic circuit formed on a small, flat piece of semiconductor material
automobile airbags. Since the early 2000s, the integration of optical functionality (optical computing) into silicon chips has been actively pursued in both
Integrated_circuit
Type of coaxial cable
to synchronize two digital audio devices, such as ADAT optical devices. This is called word clock. BNC connector Coaxial cable RG-58 – A similar cable but
RG-59
including clocks, watches, sundials, and optical astronomical instruments, cameras and old photographic equipment. Despite the title of Clock Museum, the
Przypkowscy_Clock_Museum
OPTICAL CLOCK
OPTICAL CLOCK
Girl/Female
Indian
Optional
Girl/Female
Arabic, Muslim
Clock
Girl/Female
Muslim
Clock
Boy/Male
Indian, Malayalam
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.
OPTICAL CLOCK
OPTICAL CLOCK
Boy/Male
Hindu, Indian
Last of Moksh
Boy/Male
Arabic, Muslim
Justice; Righteous
Boy/Male
Arabic
Finest; Bravest; Magnificent
Boy/Male
Arabic, Muslim
Seaport; District Capital
Boy/Male
Biblical
Anger, heat of confidence.
Girl/Female
Tamil
Shreyanvi | à®·à¯à®°à¯‡à®¯à®¾à®¨à®µà¯€
Goddess Lakshmi, Durga
Girl/Female
Tamil
New
Girl/Female
Indian, Tamil
Beautiful Woman
Boy/Male
Hindu
Master of medicines, The king of medicine
Surname or Lastname
English (Cornish)
English (Cornish) : from a short form of the female personal name Jennifer, from Welsh Gwenhwyfar (see Gaynor). Until the 19th century Jennifer was a characteristically Cornish name.German : of uncertain origin; possibly from a Celtic root or from a short form of Heinrich (see Henry) or Johannes (see John).
OPTICAL CLOCK
OPTICAL CLOCK
OPTICAL CLOCK
OPTICAL CLOCK
OPTICAL CLOCK
a.
Relating to the science of optics; as, optical works.
n.
Of or pertaining to a place; limited; logical application; as, a topical remedy; a topical claim or privilege.
a.
Belonging to, or consisting of, bark or rind; resembling bark or rind; external; outer; superficial; as, the cortical substance of the kidney.
a.
Of or pertaining to vision or sight.
n.
An optical glass; a telescope.
adv.
By optics or sight; with reference to optics.
a.
Expressed in metrical form; exhibiting the imaginative or the rhythmical quality of poetry; as, a poetical composition; poetical prose.
n.
Of or pertaining to the science of vision; optical.
a.
Topical.
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.
One skilled in optics.
n.
An instrument for showing the optical effects of color.
n.
The space covered by an optical instrument at one view.
a.
One who deals in optical glasses and instruments.
n.
An optical glass that is convex on both sides.
n.
An optical toy similar to the phenakistoscope. See Phenakistoscope.
n.
A reflecting optical glass or instrument; a mirror.
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 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.
a.
Alt. of Optical