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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
Mechanism in a telescope's mount
In astronomy, a clock drive (also known as a sidereal drive or field rotator) is a motor-controlled mechanism used to move an equatorial mounted telescope
Clock_drive
Polymath (1020–1101)
to utilize a mechanical clock drive. Su's clock tower also featured the oldest known endless power-transmitting chain drive, called the tian ti (天梯)
Su_Song
Type of clock that displays the time with numbers
electronic drives, but the "digital" description refers only to the display, not to the drive mechanism. (Both analogue and digital clocks can be driven
Digital_clock
Mounting system for camera or telescope
axis at a constant speed. Such an arrangement is called a sidereal drive or clock drive. Equatorial mounts achieve this by aligning their rotational axis
Equatorial_mount
Company based in New Hope, Pennsylvania
The cast-aluminum double-fork arm mount was designed with a built-in clock drive and became equatorial by adding the collapsible legs included. It also
Questar_Corporation
Timepiece in which time is measured by the flow of liquid into or out of a vessel
to drive the clock by using a water wheel or something similar, or by having water in their displays. The Greeks and Romans advanced water clock design
Water_clock
Type of single-phase motor, typically driving a timepiece
use as a drive in electro-mechanical clocks and is a special kind of single-phase stepping motor. Both analog and stepped-movement quartz clocks use the
Lavet-type_stepping_motor
Type of Newtonian telescope popularized by John Dobson
characteristics: Altazimuth mount: An equatorial telescope mount with clock drive was left out of the design. Equatorial mounts tend to be massive (less
Dobsonian_telescope
Clock type
second. The pulse-per-second output can be used to drive many kinds of clocks. In analog quartz clocks and wristwatches, the electric pulse-per-second output
Quartz_clock
Type of telescope mount and related software
differs from the single-axis semi-automated tracking of a traditional clock-drive equatorial mount. The user can command the mount to point the telescope
GoTo_(telescopes)
Mechanism for regulating the speed of clocks
escapement for the workings of a water-powered armillary sphere and clock drive, which was the world's first clockwork escapement. Song dynasty horologists
Escapement
Astronomical equivalent of longitude
with one of its two pivots parallel to the Earth's axis. A motorized clock drive often is used with an equatorial mount to cancel out the Earth's rotation
Right_ascension
Clock used for pace of play in sports
A shot clock is a countdown timer used in a variety of games and sports, indicating a set amount of time that a team may possess the object of play before
Shot_clock
Sculptural clock in Cambridge, England
2037600; 0.1176400 The Corpus Clock, also known as the Chronophage or the Grasshopper clock, is a large sculptural clock on the outside of the Taylor Library
Corpus_Clock
Tall, freestanding, weight-driven pendulum clock
clock (also a longcase clock, tall-case clock, grandfather's clock, hall clock or floor clock) is a tall, freestanding, weight-driven pendulum clock,
Grandfather_clock
Clock that is depent on another clock for its accuracy
telecommunication and horology, a slave clock is a clock that depends on another clock, the master clock. Modern clocks are synchronized through the Internet
Slave_clock
Way of transmitting mechanical power
drums. The chain drive itself converted rotary to reclinear motion and was given power via the hydraulic works of Su's water clock tank and waterwheel
Chain_drive
Electronic signal to synchronize circuits
In electronics and especially synchronous digital circuits, a clock signal (historically also known as logic beat) is an electronic logic signal (voltage
Clock_signal
Type of AC motor
or not) Synchronous brushless wound-rotor doubly-fed electric machine Clock drive Doubly fed electric machine Short circuit ratio (synchronous generator)
Synchronous_motor
Platform that allows telescopes to track objects in the equatorial axis
east to reset the clock drive mechanism. Since the Poncet platform has no roller bearing surfaces that can be driven, the clock drive mechanism itself
Equatorial_platform
Clock that monitors the resonant frequency of atoms
An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms. It is based on the fact that atoms have quantised energy levels
Atomic_clock
Telescope at Paris Observatory, installed in 1857
The equatorial mounting made by Brunner was delivered in 1859. The clock drive for the equatorial was made by Breguet. The equatorial mounting was not
Arago_telescope
Properties register in California, US
Ostashay (May 2016). "City Landmark Assessment & Evaluation Report - Clock Drive-In Market". City of Beverly Hills. Retrieved January 13, 2026. Margarita
Beverly Hills Register of Historic Properties
Beverly_Hills_Register_of_Historic_Properties
Topics referred to by the same term
within the horizontal plane, of a directional antenna Field rotator or Clock drive, a mechanism to move a telescope to keep the aim in exact sync with the
Rotator
American factory automation equipment brand owned by Rockwell Automation
Milwaukee, Wisconsin. The Allen-Bradley Clock Tower is a Milwaukee landmark featuring the largest four-sided clock in the Western Hemisphere. In 1893 Lynde
Allen-Bradley
Type of simple planetary gear train
allow the wheels at each end of a drive axle to rotate at different speeds while cornering. Other uses include clocks and analogue computers. Differentials
Differential (mechanical device)
Differential_(mechanical_device)
Mechanism for regulating the speed of clocks
specific to the type of clock. In quality clocks the bob is made as heavy as the suspension can support and the movement can drive, since this improves the
Pendulum
Clock powered by a steam engine
A steam clock is a clock which is fully or partially powered by a steam engine. Only a few functioning steam clocks exist, most designed and built by
Steam_clock
Clock that uses a torsion pendulum to keep time
(disambiguation) A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism
Torsion_pendulum_clock
(reflex) sight Cheshire collimator: A simple tool to collimate a telescope Clock drive GoTo Mirror support cell Serrurier truss Silvering Telescope mount -
List of telescope parts and construction
List_of_telescope_parts_and_construction
Dial of an analogue clock or watch
A clock face is the part of an analog clock (or watch) that displays time through the use of a flat dial with reference marks, and revolving pointers
Clock_face
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
Method of orienting telescopes and other celestial observation devices
The method is based on attempting to track stars in the sky using the clock drive; any error in the polar alignment will show up as the drift of the stars
Polar_alignment
2011 soundtrack album by Johnny Jewel and Cliff Martinez
out "Under Your Spell" and "Tick of the Clock" because he thought of Drive being a fairy tale. During Drive's climax, "A Real Hero"'s keynote melody,
Drive_(soundtrack)
Large prominently located clock used as a public amenity
A turret clock or tower clock is a clock designed to be mounted high in the wall of a building, usually in a clock tower, in public buildings such as
Turret_clock
English band
Tilburg, the Netherlands. In 2014, Clock DVA released the album Clock 2 on a USB drive through their label Anterior Research. This limited edition release
Clock_DVA
Seasonal change of clock settings
of advancing clocks to (in theory) make better use of the longer daylight available during summer by having darkness fall at a later clock time. The typical
Daylight_saving_time
Hypothetical FTL transportation by warping space
The Alcubierre drive ([alkuˈβjere]) is a speculative warp drive idea according to which a spacecraft could achieve apparent faster-than-light travel by
Alcubierre_drive
Data storage device
flash drive (also known as a thumb drive) is a data storage device that includes flash memory with an integrated USB interface. A typical USB drive is removable
USB_flash_drive
Type of mechanism used in pendulum clocks
escapement is a type of escapement used in pendulum clocks. The escapement is a mechanism in a mechanical clock that maintains the swing of the pendulum by giving
Anchor_escapement
2023 film by Alexis Jacknow
Clock is a 2023 American science fiction horror film written and directed by Alexis Jacknow in her feature-length debut, based on her 2020 short film
Clock_(film)
Part of accurate clock or watch
weight. In turret clocks, it serves to separate the large forces needed to drive the hands from the modest forces needed to drive the escapement which
Remontoire
Remove power from a computer's main components in a controlled way
CPUs, RAM modules and hard disk drives are powered down, although some internal components, such as an internal clock, may retain power. The shutdown
Shutdown_(computing)
Mainspring force equalizing pulley in timepieces
timekeeping mechanism, used in all early clocks, was sensitive to changes in drive force. So early spring-driven clocks slowed down over their running period
Fusee_(horology)
Extracting timing information in serial communication
a disk drive and serial communication networks such as Ethernet) are sent without an accompanying clock signal. The receiver generates a clock from an
Clock_recovery
Ancient clock of Salisbury Cathedral
The Salisbury Cathedral clock is a large iron-framed tower clock without a dial, in Salisbury Cathedral, England. Thought to date from about 1386, it is
Salisbury_Cathedral_clock
Sony's third home video game console
9, 2022. Previous post Next post (March 1, 2010). "ApocalyPS3: Buggy Clock Drives PlayStation 3 Haywire | GameLife". Wired.com. Archived from the original
PlayStation_3
Electronic control system
Typically, the reference clock enters the chip and drives a PLL, which then drives the system's clock distribution. The clock distribution is usually balanced
Phase-locked_loop
American restaurant chain
Mel's Drive-In refers to two American restaurant chains, the successors of a chain founded in 1947 by Mel Weiss and Harold Dobbs in San Francisco, California
Mel's_Drive-In
Clock that sounds the time with a bell or gong
clock is a clock that sounds the hours audibly on a bell, gong, or other audible device. In 12-hour striking, used most commonly in striking clocks today
Striking_clock
Electromechanical, digital timekeeping device
A flip clock (also known as a "flap clock") is an electromechanical, digital timekeeping device which displays the time through a split-flap display, where
Flip_clock
Clock displaying astronomical information
An astronomical clock, horologium, or orloj is a clock with special mechanisms and dials to display astronomical information, such as the relative positions
Astronomical_clock
Eccentric gear reduction mechanism
cycloidal drive work?". tec-science. Retrieved 2019-11-05. Wikimedia Commons has media related to Cycloidal gears. Darali Cycloid Reducers Clock Mechanism
Cycloidal_drive
1987 IBM desktop computer
the course of its lifespan, increasing the computer's hard drive capacity as well as the clock speed of its processor and the maximum supported RAM. IBM
IBM_PS/2_Model_80
Clock powered by electricity
An electric clock is a clock that is powered by electricity, as opposed to a mechanical clock which is powered by a hanging weight or a mainspring. The
Electric_clock
Kinetic sculpture in Hornsby, Sydney, Australia
Hornsby Water Clock, titled Man, Time and the Environment is a piece of kinetic sculpture, a decorative fountain and a functional clock in the Florence
Hornsby_Water_Clock
Irish astronomer
aperture and a new dome and mounting that had an electrically controlled clock drive, from the Grubb Telescope Company. The new telescope was mounted in a
William Edward Wilson (astronomer)
William_Edward_Wilson_(astronomer)
Internal expansion bus in early PC compatibles
8-bit bus ran from the 4.77 MHz clock of the 8088 CPU in the IBM PC and PC/XT. The original 16-bit bus ran from the CPU clock of the 80286 in IBM PC/AT computers
Industry Standard Architecture
Industry_Standard_Architecture
Home video game console
The Sega Genesis, known as the Mega Drive outside North America, is a 16-bit fourth generation home video game console developed and sold by Sega. It
Sega_Genesis
Clock to calculate the date of Easter
A computus clock is a clock equipped with a mechanism that automatically calculates and displays, or helps determine, the date of Easter (and other dependent
Computus_clock
2007 American television series
Drive is an American action drama television series created by Tim Minear and Ben Queen, produced by Minear, Queen, and Greg Yaitanes, and starring Nathan
Drive_(2007_TV_series)
Integrated circuit
parallel and serial I/O capabilities as well as timers and a Time-of-Day (TOD) clock. The device's most prominent use was in the Commodore 64 and Commodore 128(D)
MOS_Technology_CIA
Biological mechanism that controls circadian rhythm
environment, primarily daylight and darkness. Circadian clocks are the central mechanisms that drive circadian rhythms. They consist of three major components:
Circadian_clock
Digital electronic term
many years. Often a single signal (as an extreme example, the clock signal) needs to drive far more than 10 things on a chip. Rather than simply wiring
Fan-out
Gear mechanism
and so on). The Iron Ring Clock uses a Geneva mechanism to provide intermittent motion to one of its rings. A Geneva drive was used to change filters
Geneva_drive
American rock band
Drive-By Truckers are an American rock band based in Athens, Georgia. Two of five current members (Patterson Hood and Mike Cooley) are originally from
Drive-By_Truckers
Line of PowerPC-based computers
systems the CPU Bus Clock is supplied by the removable CPU card. However, on the ANS the clock buffer which splits the System Clock for all the CPU Bus
Apple_Network_Server
Long-running atmosphere-powered clock
which drives the clock mechanism. A similar mechanism in a commercially available clock that operates on the same principle is the Atmos clock, manufactured
Beverly_Clock
Mechanism of a watch or clock
standard movement Spring Drive "Clock Services and Repairs". Grandfather Clock Manufacturers and Antique Clock Repairs. Affordable Clocks. 2008. Archived from
Movement_(clockwork)
Church in Derbyshire, England
Edmund Beckett, 1st Baron Grimthorpe. The pendulum weighs 2½ cwt. The clock drives two 6 feet (1.8 m) diameter skeleton dials on the East and West sides
St_Peter's_Church,_Derby
Astronomical observatory
This instrument has been upgraded with a new optics lens and a new clock drive, and an ST-4 star tracker was attached to the telescope's side to correct
Goodricke-Pigott_Observatory
Fictional superluminal spacecraft propulsion system
A warp drive or a drive enabling space warp is a fictional superluminal (faster than the speed of light) spacecraft propulsion system in many science fiction
Warp_drive
Clock
mechanism drives the pointer on this display. The user has to add the equation of time to clock time to calculate solar time. Most later equation clocks, made
Equation_clock
Imaging of astronomical objects
enough so they would not sag out of focus during the exposure, building clock drives that could rotate the telescope mount at a constant rate, and developing
Astrophotography
2007 studio album by Chromatics
from the album's title track. "Tick of the Clock" has been used in numerous Hollywood films, including Drive and Taken 2. It has been licensed for commercial
Night_Drive_(album)
1995 film directed by Spike Lee
Clockers is a 1995 American crime drama film directed by Spike Lee. It is an adaptation of the 1992 novel of the same name by Richard Price, who also co-wrote
Clockers_(film)
Historic manufacturer of telescopes
provided an equatorial mount that could track targets automatically using a clock drive; although this was not the first telescope with an equatorial mount,
Grubb_Parsons
Device in signal processing
to 100 ns. A 5 MHz reference clock drives a phase-locked loop to produce a stable 500 MHz clock. It is this fast clock that is gated by the (fine-delayed)
Time-to-digital_converter
2002 survival horror video game
Clock Tower 3 is a survival horror video game co-produced by Capcom and Sunsoft for the PlayStation 2. Released in 2002, it is the fourth installment
Clock_Tower_3
Microprocessor developed by Intel
little known, Intel did in fact release an OverDrive chip for these sockets, that used an internal clock multiplier of 2, to change them to a "120/133"
Pentium_OverDrive
English phrase
of the clock or "thirteen strikes of the clock" is a phrase, saying, and proverb to indicate that the previous events or "strokes to the clock" must be
Thirteenth stroke of the clock
Thirteenth_stroke_of_the_clock
Water-powered clock in Nottingham, England
Tintinnabulator (also known as the Victoria Centre Clock, Emett Clock, or The Time Fountain) is a 'water-powered' clock. From 1973 to 2014 it was installed on the
Aqua Horological Tintinnabulator
Aqua_Horological_Tintinnabulator
American football tournament
in 18 plays on a drive that took 9:33 off the clock. Los Angeles wide receiver Cooper Kupp caught 3 passes for 36 yards on the drive, the last a 16-yard
2021–22_NFL_playoffs
astronomical clock tower was built by the polymath Su Song in 1088, which featured the first known endless power-transmitting chain drive. The Greek philosophers
History of timekeeping devices
History_of_timekeeping_devices
Computer hardware component
driven low. The SDataIn and SdataOut then repeats with 3 clocks per drive until the last drive is reached, and the cycle starts over again. There are varieties
SGPIO
Observatory
contains a 12-inch refracting telescope with a weight-driven mechanical clock drive. The original glass blanks that were to become the optics were procured
Fuertes_Observatory
Scottish astronomer (1843–1914)
the Cape of Good Hope. He was born in Aberdeen, trained as a watch and clock-maker, and spent ten years in the family business, which he took over from
David_Gill_(astronomer)
American electronic music band
Chromatics gained recognition for their song "Tick of the Clock" which was used in the film Drive, released in September 2011 by director Nicolas Winding
Chromatics_(band)
Film by video artist Christian Marclay
The Clock is a film by video artist Christian Marclay. It is a looped 24-hour video supercut (montage of scenes from film and television) that feature
The_Clock_(2010_film)
American basketball player (born 1956)
in my face and was like 'Damn, I didn't mean to leave two seconds on the clock.'" When playing against Dennis Rodman, a player known for his defensive
Larry_Bird
2025 British film
complicated when Tranter discovers a timed trigger. He uses a magnetic clock stopper to temporarily disable the timer, while the rest attempt to build
Fuze_(film)
Superhero comic book published by DC Comics
Doomsday Clock is a 2017–2019 superhero comic book limited series published by DC Comics, written by Geoff Johns with art by penciller Gary Frank and
Doomsday_Clock_(comics)
Historic observatory in Wellington, New Zealand
course of several decades for their astronomical research. In 1879, a clock drive was provided by the Grubb Telescope Company, and this still serves as
Space Place at Carter Observatory
Space_Place_at_Carter_Observatory
Device for keeping a mechanical clock working while it is being wound
mechanism for keeping a clock or watch going while it is being wound. The weight drive used by Christiaan Huygens in his early clocks acts as a maintaining
Maintaining_power
Unit of digital information
particularly hard drives, flash-based storage, and DVDs, and is also consistent with the other uses of the SI prefix in computing, such as CPU clock speeds or
Gigabyte
Mechanical calculating device
designed to work with the clock. An important aspect of the Vickers range clock, as well as other designs using a wheel-on-disc drive for the variable speed
Vickers_range_clock
Historic clock on the Spasskaya Tower
colloquially in the West as Moscow Clock Tower, is a historic clock on the Spasskaya Tower of Moscow Kremlin. The clock dial is above the main gates to Red
Kremlin_Clock
Loss or gain of bits in digital transmission
slip is the loss or gain of a bit or bits, caused by clock drift – variations in the respective clock rates of the transmitting and receiving devices. One
Bit_slip
Spring used as clockwork power source
the clock. The disadvantage of this open spring arrangement is that while the mainspring is being wound, its drive force is removed from the clock movement
Mainspring
CLOCK DRIVE
CLOCK DRIVE
Boy/Male
Hebrew
Of God's flock.
Boy/Male
Indian, Malayalam
Clock
Girl/Female
Muslim
Clock
Surname or Lastname
English
English : metonymic occupational name for a locksmith, from Middle English, Old English loc ‘lock’, ‘fastening’.English : topographic name for someone who lived near an enclosure, a place that could be locked, Middle English loke, Old English loca (a derivative of loc as in 1). Middle English loke also came to be used to denote a barrier, in particular a barrier on a river which could be opened and closed at will, and, by extension, a bridge. The surname may thus also have been a metonymic occupational name for a lock-keeper.English, Dutch, and German : nickname for a person with fine hair, or curly hair, from Middle English loc, Middle High German lock(e) ‘lock (of hair)’, ‘curl’.Americanized spelling of German Loch.
Boy/Male
Basque, Biblical, French, German, Hebrew
A Flock; Herd
Surname or Lastname
German and Dutch
German and Dutch : from Middle High German bloch, Middle Dutch blok ‘block of wood’, ‘stocks’. The surname probably originated as a nickname for a large, lumpish man, or perhaps as a nickname for a persistent lawbreaker who found himself often in the stocks.English : possibly a metonymic occupational name for someone who blocks, as in shoemaking and bookbinding, from Middle English blok ‘block’.Jewish (Ashkenazic) : Americanized spelling of Bloch (see Vlach).Adriaen Coertsz Block was a Dutch-born merchant-explorer who traded along the CT coast and Long Island shortly after Hudson’s voyage to the region in 1609. Block Island, between the north fork of Long Island and RI, which he used as a base of operations, is named after him.
Boy/Male
Biblical Hebrew
A flock.
Surname or Lastname
Americanized spelling of German Krock.English
Americanized spelling of German Krock.English : perhaps a metonymic occupational name for a potter, from Middle English crock ‘pot’.
Surname or Lastname
English
English : topographic name for someone who lived on a small plot of land, from Middle English plocke ‘small piece of ground’.Americanized spelling of German Ploch.Variant of German Block.
Boy/Male
British, English, Irish
Woods; Fortified Place; Bright; Radiant
Biblical
a flock
Boy/Male
Gaelic
Little cloak.
Surname or Lastname
English
English : of uncertain origin; possibly a nickname for someone with thick curly hair, from Old French floc ‘stable of wool’. Alternatively, it may be a metonymic occupational name for a shepherd, from Old English flocc ‘herd’, ‘company’.German : unexplained.German (Flöck) : variant of Flück (see Fluck), or from a pet form of a personal name formed with Old Saxon flÅd ‘flood’.
Surname or Lastname
English
English : see Cleek.Possibly an Americanized spelling of German Klick, Jewish Glick, or German and Jewish Glück (see Gluck).
Girl/Female
German, Hebrew, Irish
Flock of Sheep
Girl/Female
Arabic
Lock; Awesome
Girl/Female
Arabic, Muslim
Clock
Boy/Male
Hebrew
Of God's flock.
Surname or Lastname
English
English : from a Middle English personal name Clac, which is from Old English Clacc or the Old Norse cognate Klakkr. As a personal name this is from a word meaning ‘lump’ and may have been used as a nickname for a large or thickset man. Reaney suggests that it could also be from clacker ‘chatterer’.
Boy/Male
Indian
Latch, Door lock
CLOCK DRIVE
CLOCK DRIVE
Boy/Male
Latin
Small.
Girl/Female
Muslim/Islamic
Precious
Surname or Lastname
English (Lincolnshire)
English (Lincolnshire) : unexplained. Black identified this as a Scottish name of Pictish origin. However, the modern distribution of the surname, almost exclusively in Lincolnshire and adjoining counties, suggests a more localized eastern English origin.
Girl/Female
English
and Kayla, meaning: keeper of the keys; pure.
Boy/Male
Tamil
Boy/Male
Hindu
Lord/protector
Boy/Male
Indian, Sanskrit
Bright
Girl/Female
Hindu
Artistic or Goddess Parvati
Girl/Female
Tamil
Chinitya | சீநீதà¯à®¯Â
Shobamaina
Boy/Male
Hindu, Indian
Lord Shiva
CLOCK DRIVE
CLOCK DRIVE
CLOCK DRIVE
CLOCK DRIVE
CLOCK DRIVE
adv.
Entirely; quite; as, chock home; chock aft.
v. t.
To lay up in a crock; as, to crock butter.
v. t.
To fasten with a lock, or as with a lock; to make fast; to prevent free movement of; as, to lock a door, a carriage wheel, a river, etc.
v. t.
A section of a railroad where the block system is used. See Block system, below.
n.
The hammer in the lock of a firearm.
v. t.
To fasten in or out, or to make secure by means of, or as with, locks; to confine, or to shut in or out -- often with up; as, to lock one's self in a room; to lock up the prisoners; to lock up one's silver; to lock intruders out of the house; to lock money into a vault; to lock a child in one's arms; to lock a secret in one's breast.
n.
The striking of a clock.
n.
A click. See 3d Click, 2.
n.
The act of cocking; also, the turn so given; as, a cock of the eyes; to give a hat a saucy cock.
v. t.
To coat with flock, as wall paper; to roughen the surface of (as glass) so as to give an appearance of being covered with fine flock.
v. t.
To move with the sound of a click.
v. t.
To stop or fasten, as with a wedge, or block; to scotch; as, to chock a wheel or cask.
v. t. & i.
To call, as a hen. See Cluck.
v. t.
To prevent ingress or access to, or exit from, by fastening the lock or locks of; -- often with up; as, to lock or lock up, a house, jail, room, trunk. etc.
v. t.
To flock to; to crowd.
v. t.
To cover with, or as with, a cloak; hence, to hide or conceal.
v. i.
To give off crock or smut.
n.
To shape on, or stamp with, a block; as, to block a hat.
n.
A lock of wool or hair.