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]
Use your wall space as the board to create your scalable clock. The Blink wall clock by Umbra is a set of black metal indicators and 12 number that mount to the wall with adhesives. Comes with a template to set the scale of the clock on a wall. Clock mechanism mounts to the wall with a screw or nail operate on one AA battery (not included). Designed by Edward Lee and Adrienna Matzeg Umbra original, modern, casual, functional and affordable design for the home.

Go to bed with positive thoughts. Tell yourself, “I want to get up early because…” and then, actually do it. Sleep studies happen all the time, and they tell us what exterior activities are affecting our dreams, our nightmares, etc., and talking to yourself as you drift off to bed has been proven to work. If you’re looking forward to something in the morning, tell yourself about it, and your body will hold onto that through the night.


This selection offers an analog display with hands and a built-in digital wall clock. Metallic gray wall clock with a flat bezel framing the dial. White dial with large black Arabic numerals, black hour, minute and second hands beneath a glass crystal. LCD calendar in the dial displays the month, date, and day of the week. Quartz, battery operated movement.
Most digital clocks use electronic mechanisms and LCD, LED, or VFD displays; many other display technologies are used as well (cathode ray tubes, nixie tubes, etc.). After a reset, battery change or power failure, these clocks without a backup battery or capacitor either start counting from 12:00, or stay at 12:00, often with blinking digits indicating that the time needs to be set. Some newer clocks will reset themselves based on radio or Internet time servers that are tuned to national atomic clocks. Since the advent of digital clocks in the 1960s, the use of analog clocks has declined significantly.
Remember when the idea of chasing your alarm clock around the house was absolutely mad? Well, Clocky made it a reality, and they haven’t gone out of style yet. Bed shakers may work for some, but if you can ignore it and snooze on through, chasing your alarm clock around the room may be the next best thing. This mad machine can leap from three feet high, and if you’re trying to get some shut-eye on a Saturday, you can disable the wheels and make it stationary for the time being. Just don’t let that ruin your important meeting come 9:00 AM Monday morning. This little buzzer droid is going to make R2-D2 sounds while it zips around the room, egging you on to catch it.
Clock radios are powered by AC power from the wall socket. In the event of a power interruption, older electronic digital models used to reset the time to midnight (00:00) and lose alarm settings. This would cause failure to trigger the alarm even if the power is restored. To solve this issue, they trigger the alarm at 00:01 after a reset, so that at least the user is able to correct the clock and alarm settings. Most of the recent clock radios use a battery backup to maintain the time and alarm settings. Some advanced radio clocks (not to be confused with clocks with AM/FM radios) have a feature which sets the time automatically using signals from atomic clock-synced time signal radio stations such as WWV, making the clock accurate and immune to time reset due to power interruptions.
Most digital computers depend on an internal signal at constant frequency to synchronize processing; this is referred to as a clock signal. (A few research projects are developing CPUs based on asynchronous circuits.) Some equipment, including computers, also maintains time and date for use as required; this is referred to as time-of-day clock, and is distinct from the system clock signal, although possibly based on counting its cycles.
The pendulum is a reliable time measurer because, for small arcs, the time required for a complete swing (period) depends only on the length of the pendulum and is almost independent of the extent of the arc. The length of a pendulum with a period of one second is about 39 inches (990 mm), and an increase in length of 0.001 inch (0.025 mm) will make the clock lose about one second per day. Altering the length of a pendulum is therefore a sensitive means of regulation. The alteration is usually carried out by allowing the bob to rest upon a nut that can be screwed up or down the pendulum rod.

A clock accent and 9 metal gears make this vintaged wall decor a statement-making addition to any room. Hang it in the den for a rustic-chic focal point or add it to a cluster of canvas prints for a dynamic gallery display. Nothing adorns your living space like a lavish timepiece, and with the Chellis Wall Clock you are sure to receive a lot of compliments. Intricately designed, this clock is an eye-catching piece that will elevate the beauty of your decor manifold. A rustic and cutting-edge...
Shop alarm clocks, watches, and timers designed to wake up all types of sleepers. Standard alarm clocks are not very effective at waking deep sleepers or people with a hearing loss, especially those who are severely hard of hearing or deaf. The alarm clocks include a combination of features, such as extra loud alarms, vibrating bed shakers, lamp flashers and bright strobe light that's sure to wake you up! Discover new arrivals or shop clock favorites from Sonic Alert, Global Assistive Devices, Bellman, iLuv and more!

Fellow tea-lovers, all of our dreams are coming true! We can finally wake up to the smells and sounds of freshly brewed tea with the Teasmade Alarm Clock. Instead of making screeching noises to get you out of bed, it'll first brew you a fresh cup of tea at the time of your choice, and then sound an alarm after boiling is complete. After dark, the face of the clock illuminates with an adjustable blue night light that's dim enough to not disturb light-sensitive sleepers.
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"Stripe Clock" is a modern metallic design created by the artist, Belle. Measured at 24 inches on each side, this metal art is made from a single sheet of metal expertly grinded and tinted and made in to a functional clock. It is mainly characterized by the bright stripe in the middle of the sheet of metal. Each stroke and grind pattern on this piece accentuates the beauty of the plain sheet of metal. The glimmer coming from the shallow grinds are like street lights illuminating the city in the...
Molded by mid-century modern style, this 38" wall clock brings a bit of bold flair to any space in your home. Its generous size helps it grab glances (and compliments!) from guests, while its open and numberless design gives it a minimalist feel. Crafted from metal, this round silhouette sports a gold finish with silver-finished hands in the center for subtle contrast. Two AA batteries (not included) are required to operate.

An on-trend take on a retro design, this 12" round wall clock brings a splash of color to any space in your home. This budget-friendly accent showcases a circular face bordered by alternating blocks of green, blue, and red hues with black Roman numerals in the center. Its plastic frame ensures that it’s lightweight and easy to hang, while its metallic pierced hands offer subtle shimmer. This piece does not include batteries.
If the only thing that will get you out the door in the morning is some serious nagging, Clockman is for you. This chatty clock refuses to shut up, even after you get out of bed. He'll greet you at your desired time, sing while you get dressed, and even yell if you anger him. While Clockman speaks only Japanese for now, his wake-up-and-get-going message isn't lost in translation.
"Love it...Love it....Just a basic alarm clock needed one to check that my FM transmitter is on the correct frequency one that had a digital tuner fits the bill just fine and a battery back up clock for time announcements ....What can I say, it's a quality alarm, that never fails, and is not expensive Not once has this alarm failed to wake me up, Digits are bright and easy to see If I were to say something negative, The time is a little too fast (in a month you'll notice your like a minute or two ahead of the actual time, easy fix though) And the radio connection needs to better"
Clock radios are powered by AC power from the wall socket. In the event of a power interruption, older electronic digital models used to reset the time to midnight (00:00) and lose alarm settings. This would cause failure to trigger the alarm even if the power is restored. To solve this issue, they trigger the alarm at 00:01 after a reset, so that at least the user is able to correct the clock and alarm settings. Most of the recent clock radios use a battery backup to maintain the time and alarm settings. Some advanced radio clocks (not to be confused with clocks with AM/FM radios) have a feature which sets the time automatically using signals from atomic clock-synced time signal radio stations such as WWV, making the clock accurate and immune to time reset due to power interruptions.
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Time can be smart, clever, ultra-stylish, functional and simple with this Cube Click Desktop Clock. This Cube Click Desktop Clock can tell you the time, date and temperature alternately in blue LED color on a black wood-effect block at the click of your fingers and automatically switches off when the room is quiet, lighting up again when the alarm goes off or as a response to clicked fingers or clapped hands. The numbers seem to float on the lovely wooden block, but that's just half the magic...
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.

A: There’s always going to be a sleep-related study going on, but you might be surprised to find that it’s not a one-size-fits-all answer. There’s about 1% of the population, known as The Sleepless Elite, who don’t need to clock-in a bunch of hours with their pillows. Some of us just run better off of less sleep, even if we don’t realize it right away. There’s such a thing as oversleeping, too, so how do you really know your specific sleep needs?
In mechanical clocks, the low Q of the balance wheel or pendulum oscillator made them very sensitive to the disturbing effect of the impulses of the escapement, so the escapement had a great effect on the accuracy of the clock, and many escapement designs were tried. The higher Q of resonators in electronic clocks makes them relatively insensitive to the disturbing effects of the drive power, so the driving oscillator circuit is a much less critical component.[2]
Now, RCA Digital Alarm Clock is pretty basic, but for some of us, that’s all we need, right? With a bright, beaming red LED display, you’re certain to rub your eyes and wonder what weird light is pulsating from your nightstand. There’s an alarm indicator and the classic AM/PM light that we all remember from early-2000 models. You can do something different from your late 1990s-inspired clock, and that is change the brightness levels so you don’t completely burn out your retinas.
Here is a clock that will look great in any room in the house and it never needs a plug! This Water Clock is powered by ordinary tap water. Never needs batteries or electricity. Just fill this Water clock with water and you are on your way to more eco-friendly home. After about 6 months to a year you may need to dump the water out (your can pour it into a plant) and refill. The clock will remember the time as you do so. It even has an alarm. Great for traveling as well. Why would you ever use...
Antique styling in a two-tone wall clock features a Worn Black finish with red undertones and a contrasting Antique Red inset panel. Beneath a convex glass crystal, the dial features an Antique Red background with gold Arabic numerals and aged brass-tone spade hands. The wood stick pendulum features a spun brass-finished bob. Finished in Worn Black on select materials, hardwoods and veneers. Quartz, non-chiming battery operated movement.
late 14c., clokke, originally "clock with bells," probably from Middle Dutch clocke (Dutch klok) "a clock," from Old North French cloque (Old French cloke, Modern French cloche), from Medieval Latin (7c.) clocca "bell," probably from Celtic (cf. Old Irish clocc, Welsh cloch, Manx clagg "a bell") and spread by Irish missionaries (unless the Celtic words are from Latin); ultimately of imitative origin.
Bring home this table clock that showcases an antique-inspired look. Measuring 18'' H x 15'' W x 5'' D, it's the perfect piece to place on a bookshelf or desktop for a practical yet decorative accent. Made in a traditional, alarm-clock inspired style, it features a distressed gray metal frame and feet. Its face displays an off-white background and faded roman numerals, as well as an hour hand, minute hand, and ornamental gears in the center. It accommodates one AA battery to help keep you on...
“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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