Never squint to see what time it is again, especially when you're waking up 20 times in the middle of the night to, you know, see exactly what time it is. We love the projection feature that displays the time on your wall or ceiling for easy viewing. Plus, it'll even toss up the temperature — so you'll already know what you should wear to work before you even get out of bed.

Slave clocks, used in large institutions and schools from the 1860s to the 1970s, kept time with a pendulum, but were wired to a master clock in the building, and periodically received a signal to synchronize them with the master, often on the hour.[71] Later versions without pendulums were triggered by a pulse from the master clock and certain sequences used to force rapid synchronization following a power failure.

This Digital Bluetooth AM/FM Dual Alarm Radio Tabletop Clock from Jensen makes getting up in the morning a more appealing proposition. With the option to wake to radio or alarm, you can start your day off right. It even has an aux input so you can connect a smartphone or music player, letting you play whatever tunes you like right from your nightstand.
Sync your phone and play music through the Sync your phone and play music through the integrated Bluetooth speaker. With its 1-Amp USB charging port you can charge your mobile device while you sleep. Large easy to read 0.9 in. LED display and soft mood light for nighttime use. Features PM Alarm1 or Alarm2 and Bluetooth indicators. AC ...  More + Product Details Close
Clocks aren't just for telling time! Take this one for example: artful with its understated analog dial, this piece is perfect lending an upscale feel to your living room look or kitchen ensemble. Measuring 16'' circular, its frame features a glass design accented by a shiny chrome center and openwork hands to mark the hour. This product required one AA battery to operate, which is not included. Suitable for indoor use only.
You can choose from an analog styled clock to a digital one. Our alarm clocks can vary from old, retro, 1950 styled clocks to modern 2013. Depending on your desire, we have wind up alarm clocks, clocks that do or do not tick, or clocks with or without a built in radio. We have clocks for children, clocks that run on battery, or ones that plug directly into an outlet.
During the 15th and 16th centuries, clockmaking flourished, particularly in the metalworking towns of Nuremberg and Augsburg, and in Blois, France. Some of the more basic table clocks have only one time-keeping hand, with the dial between the hour markers being divided into four equal parts making the clocks readable to the nearest 15 minutes. Other clocks were exhibitions of craftsmanship and skill, incorporating astronomical indicators and musical movements. The cross-beat escapement was invented in 1584 by Jost Bürgi, who also developed the remontoire. Bürgi's clocks were a great improvement in accuracy as they were correct to within a minute a day.[35][36] These clocks helped the 16th-century astronomer Tycho Brahe to observe astronomical events with much greater precision than before.[citation needed][how?]
Marathon's Atomic alarm clock with temperature and date is packed with features. It has an ambient light sensor, which allows the auto-night light to illuminate the display when necessary. With a soft amber LED, the large digit display is easy to read at night and becomes even brighter if the Snooze/Light button is pressed. At a glance you can easily see the time, date, day and temperature. The controls on the front of the clock allow you to easily set the alarm, switch between Fahrenheit or...
The Howard Miller Postema Oversized 49" Wall Clock is a unique piece that will remind you of oversized clocks. This round-shaped clock is a piece of style with the traditional accents. The clock has an espresso finish and round shape. You can mount this clock in any room at your home. This clock can also be placed in big halls or entryways because of its size and functionality. The clock has a distressed finish that complements the espresso varnish. This antique wall clock is made from wrought...
This farmhouse wall clock measures 24 in. across This farmhouse wall clock measures 24 in. across the face and features horizontal cedar wood slats a white distressed finish hand painted black Roman numerals in a Poster Condensed font and an inner accent ring with individual hour marks. It includes a high torque quartz movement antique-style spade hands and ...  More + Product Details Close
This Digital Bluetooth AM/FM Dual Alarm Radio Tabletop Clock from Jensen makes getting up in the morning a more appealing proposition. With the option to wake to radio or alarm, you can start your day off right. It even has an aux input so you can connect a smartphone or music player, letting you play whatever tunes you like right from your nightstand.
In mechanical clocks, the power source is typically either a weight suspended from a cord or chain wrapped around a pulley, sprocket or drum; or a spiral spring called a mainspring. Mechanical clocks must be wound periodically, usually by turning a knob or key or by pulling on the free end of the chain, to store energy in the weight or spring to keep the clock running.
The "similar styles" price noted is our researched retail price at a point in time of similar style of aesthetic item at another retailer offering home décor products. Like other home décor retailers, we work with a variety of partners to source our products, making each one unique to At Home. Copyright © 2018 At Home Stores LLC. Selection, quantities and pricing of products may vary by participating store. All rights reserved.

Certainly not just for telling time, wall clocks are perfect for adding artful appeal to your kitchen wall or acting as a focal point above the living room mantel. Take this one for example: crafted from metal, its frame features an openwork design and a black finish for a look that fits right into traditional abodes and modern farmhouses alike. Measures about 30'' in diameter. Requires one AA battery to operate.


Analog clocks usually use a clock face which indicates time using rotating pointers called "hands" on a fixed numbered dial or dials. The standard clock face, known universally throughout the world, has a short "hour hand" which indicates the hour on a circular dial of 12 hours, making two revolutions per day, and a longer "minute hand" which indicates the minutes in the current hour on the same dial, which is also divided into 60 minutes. It may also have a "second hand" which indicates the seconds in the current minute. The only other widely used clock face today is the 24 hour analog dial, because of the use of 24 hour time in military organizations and timetables. Before the modern clock face was standardized during the Industrial Revolution, many other face designs were used throughout the years, including dials divided into 6, 8, 10, and 24 hours. During the French Revolution the French government tried to introduce a 10-hour clock, as part of their decimal-based metric system of measurement, but it didn't catch on. An Italian 6 hour clock was developed in the 18th century, presumably to save power (a clock or watch striking 24 times uses more power).
The ancient Greek philosopher Plato (428–348 BC) was said to possess a large water clock with an unspecified alarm signal similar to the sound of a water organ; he used it at night, possibly for signaling the beginning of his lectures at dawn (Athenaeus 4.174c).[2] The Hellenistic engineer and inventor Ctesibius (fl. 285–222 BC) fitted his clepsydras with dial and pointer for indicating the time, and added elaborate "alarm systems, which could be made to drop pebbles on a gong, or blow trumpets (by forcing bell-jars down into water and taking the compressed air through a beating reed) at pre-set times" (Vitruv 11.11).[3]
The origin of the all-mechanical escapement clock is unknown; the first such devices may have been invented and used in monasteries to toll a bell that called the monks to prayers. The first mechanical clocks to which clear references exist were large, weight-driven machines fitted into towers and known today as turret clocks. These early devices struck only the hours and did not have hands or a dial.

This farmhouse wall clock measures 36 in. across This farmhouse wall clock measures 36 in. across the face and features horizontal cedar wood slats a white distressed finish hand painted black Roman numerals in a Poster Condensed font and an inner accent ring with individual hour marks. It includes a high torque quartz movement antique-style spade hands and ...  More + Product Details Close


For some scientific work timing of the utmost accuracy is essential. It is also necessary to have a standard of the maximum accuracy against which working clocks can be calibrated. An ideal clock would give the time to unlimited accuracy, but this is not realisable. Many physical processes, in particular including some transitions between atomic energy levels, occur at exceedingly stable frequency; counting cycles of such a process can give a very accurate and consistent time—clocks which work this way are usually called atomic clocks. Such clocks are typically large, very expensive, require a controlled environment, and are far more accurate than required for most purposes; they are typically used in a standards laboratory.
This Oversized Rustic Wood 24" Wall Clock is one of the best sellers and for good reason - this wonderfully shabby elegance wall clocks really give that country home decor or rustic decor character that you cannot find anywhere else! The simple beauty of it is amazing it a part for that shabby elegance decor or rustic home decor charm! Gorgeous in kitchens or anywhere you want to complete that French country decor look as well!

Don't settle for a simple wall clock to merely ensure you’re on time. Bring both function and French flair to your space with this oversized 29" oval wall clock. Made from manufactured wood, it showcases a typographic motif in the center that reads "Antiquite de Paris 1887" for a dash of antique inspiration. Classic Roman numerals and spade-style hands help you keep an eye on the hour, while a distressed finish completes the design with well-worn charm. Once you pop in a battery (not...
In China, a striking clock was devised by the Buddhist monk and inventor Yi Xing (683–727).[5] The Chinese engineers Zhang Sixun and Su Song integrated striking clock mechanisms in astronomical clocks in the 10th and 11th centuries, respectively.[6] A striking clock outside of China was the water-powered clock tower near the Umayyad Mosque in Damascus, Syria, which struck once every hour. It was constructed by the Arab engineer al-Kaysarani in 1154. In 1235, an early monumental water-powered alarm clock that "announced the appointed hours of prayer and the time both by day and by night" was completed in the entrance hall of the Mustansiriya Madrasah in Baghdad.[7]
With this collection's award-winning and patented Smart Set technology, the flashing "12:00" display is a thing of the past. The digital tuning clock radio automatically sets itself on the first use to the correct year, month, date, day, and time. The clock radio features a large and easy-to-read LED display. The alarm can be programmed to operate on weekdays only, weekends only, or all seven days of the week. The alarm displays the month and date with the touch of a button. Set the alarm to...
Any expansion or contraction of the rod caused by changes of temperature will affect the timekeeping of a pendulum; e.g., a pendulum clock with a steel rod will lose one second a day for a rise in temperature of approximately 4 °F (2.2 °C). For accurate timekeeping, the length of the pendulum must be kept as nearly constant as possible. This may be done in several ways, some of which use the differing coefficients of expansion (the amount of expansion per degree change in temperature) of different metals to obtain a cancelling-out effect. In one popular compensation method, the bob consists of a glass or metal jar containing a suitable amount of mercury. The gridiron pendulum employs rods of different metal, usually brass and steel, while in the zinc-iron tube the pendulum rod is made of concentric tubes of zinc and iron. An improved method, however, is to make the pendulum rod from a special alloy called Invar. This material has such a small coefficient of expansion that small changes of temperature have a negligible effect and can easily be compensated for if required.

Clocks aren't just for telling time! Take this one for example: artful with its understated analog dial, this piece is perfect lending an upscale feel to your living room look or kitchen ensemble. Measuring 16'' circular, its frame features a glass design accented by a shiny chrome center and openwork hands to mark the hour. This product required one AA battery to operate, which is not included. Suitable for indoor use only.
Need a little extra incentive to pry yourself out of bed? You'll have plenty of it with this no-nonsense wheeled alarm clock. After the first time you press snooze, this unit automatically starts moving away from you, creating enough distance to literally force you out of bed in order to shut it off for good. Plus, it also comes in pastel blue, white, red, and more.
In atomic clocks the controller is an evacuated microwave cavity attached to a microwave oscillator controlled by a microprocessor. A thin gas of caesium atoms is released into the cavity where they are exposed to microwaves. A laser measures how many atoms have absorbed the microwaves, and an electronic feedback control system called a phase-locked loop tunes the microwave oscillator until it is at the frequency that causes the atoms to vibrate and absorb the microwaves. Then the microwave signal is divided by digital counters to become the clock signal.[72]
For light sleepers, audio alarms can be rather jarring. Fortunately, the Philips Morning Wake-Up Light uses a warm, gentle glow and natural sound effects rather than incessant beeping to get you out of bed. The alarm clock also features a colored sunrise simulation and 20 brightness settings for optimal customization. The light slowly increases in brightness between 20 and 40 minutes prior to your desired alarm time. The clock helps you drift to sleep, too. Instead of you simply turning out the lights and settling into bed, the light-responsive dimming feature gently guides you to sleep with audio accompaniment. This type of alarm is definitely not for everyone, but it is suitable for those who prefer to wake up gradually. For more details, read our full Philips Wake-Up Light review.

Its display can be turned off or dimmed, so the large, easy-to-read numbers won’t blind you all night long. If you like to wake up to the radio or to an alarm that gets louder over time, you won’t find those features here (though there is a version with a Bluetooth speaker but still no radio). Still, it does its job well, and there’s a reason this clock is found in lots of hotel rooms.
Certainly not just for telling time, this oversized wall clock makes a statement whether set in the entryway or above your living room mantel. Its frame is crafted from metal with an antiqued silver leaf design for metallic allure. The openwork design allows it to seamlessly blend with your ensemble, while a fun analog dial lends a pop of playful appeal. Requires one AA battery to operate.
The Howard Miller Clé Du Ville 625-579 Large Wall Clock is a 26.25" diameter oversize gallery wall clock features an antique dial within a wrought iron frame with an oil rubbed bronze finish. The aged parchment background includes names of well-known French cities faded in the background. Applied vintage antique key hour markers and spade hands finished in oil rubbed bronze complement the frame. Quartz battery-operated movement requires one AA battery. One year warranty and Free Shipping.
While some people have a type of internal clock and can wake up around the same time every day, most people need a little extra help in this department. Without an alarm clock, you could sleep through your plans for the day, whether those plans include fun activities with loved ones or getting things done around the house. You might think you can use the built-in alarm on your phone. However, it's too easy to grab your phone from your bedside table and turn off the alarm without really waking up and getting going for the day.
In the 13th century, Al-Jazari, an engineer from Mesopotamia (lived 1136–1206) who worked for Artuqid king of Diyar-Bakr, Nasir al-Din, made numerous clocks of all shapes and sizes. A book on his work described 50 mechanical devices in 6 categories, including water clocks. The most reputed clocks included the Elephant, Scribe and Castle clocks, all of which have been successfully reconstructed. As well as telling the time, these grand clocks were symbols of status, grandeur and wealth of the Urtuq State.[citation needed]
Howard Miller Carmen wrought iron wall clock with cast decorative corner ornaments finished in warm gray, dusty wax highlights. Windsor Cherry finished wood columns provide a warm accent on each side. Convex glass covers the antique dial, which offers black Roman numerals and serpentine hands. The swinging pendulum is finished in warm gray with dusty wax highlights to match the case. Quartz, non-chiming battery operated movement.
In mechanical clocks this is done mechanically by a gear train, known as the wheel train. The gear train also has a second function; to transmit mechanical power from the power source to run the oscillator. There is a friction coupling called the 'cannon pinion' between the gears driving the hands and the rest of the clock, allowing the hands to be turned to set the time.[73]
Traditional led alarm clock models just don’t work for you? No problem. Blast your favorite mp3s or just have a crazy loud sound go off. You have to get up and actually step on this Instecho Carpet Alarm Clock to get it to stop, which is no problem.You’ll jump up, stomp on the mat, and be done with it—set it to play tunes for you afterwards (at a decent audio level) as a mini reward system. This mat gets up to 120 decibels (think as loud as two window unit air conditioners).

“Great little dual alarm clock. Super easy to set the two alarms. Easy to use. It has a night light feature with adjustable dimmer, which is great. You can adjust the display completely dark so you don’t see the numbers. Then you can just hit the snooze button when the alarm is not ringing and the display lights up. It’s powered only by 3 AA batteries: no electric cord, no USB, nothing that you need. If you need a fancy alarm clock that sprays water in your face, this is not it.”
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