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Clocks
(31438 products found)
Agapeon DIY 3D Mirror Wall Clock Stickers 40*40cm - Black
Agapeon DIY 3D Mirror Wall Clock Stickers 40*40cm - Black
Flower Paper Wall Clock Modern Design DIY Kitchen Living Room Decoration Clock
12 Inch (30 Cm) Rose Gold Hanging Digital Clock
12 Inches 30CM Decorative 3D Wall Clock, Silent And Stylish
Silver Heart Shaped Wall Clock Sticker
12 Inch 30 Cm Quartz Wall Clock (Silent Action)
Silver Removable Circle Combination Wall Clock Sticker
Clock Insert 3 Inch Quartz Clock Movement Arabic Numerals
12-Inch Whale Silent Battery Operated Round Glass Wall Clock
12" 30cm Dark Quartz Luminous Wall Clock
DIY Wall Clock 3D Acrylic Butterfly Wall Clock - Silver
12 Inches 30 Cm European Style Creative Decorative Round Wooden Wall Clock
DIY Wall Clock 3D Decorative Sticker 40cm - Sliver
3D DIY Wall Clock Wall Stickers Digital Clock For Home
50*45CM 3D DIY Silent Sticker Wall Clock For Kitchen, Office, Bedroom, Living Room Decor-Black.
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Roman Numerous Unique Design Big Wall Clock Watch - Black
Digital LED Alarm Clock Mirror Surface Adjustable Brightness Red Light
Luminous Wall Clock 12 Inch with Nightsight Silent Mechanism
10-Inch Nordic Simple Solid Color Silent Decorative Clock - Black
Other Office Wall Clock - White
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Large Pendulum Wall Clock Watch - Black, Purple, Violet
Big Round Wall Clock - White, Coffe Brown
Smart LED Clock Bedside Digital Alarm Clocks Desk Table Electronic Desk Watch Snooze Funtion USB Wake Up Alarm Clock Digital(#square white light)
Big Round Wall Clock - White, Coffe Brown
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LED Digital Wall Alarm Clock and Calendar - Black&Red
12 Inches 30 Cm European Style Creative Decorative Round Wooden Wall Clock
2 In1 Digital Display And Analog Big Wall Clock Watch - Green
10-Inch Nordic Simple Solid Color Silent Decorative Clock - White
Big Wall Clock - White, Coffe Brown
Wall Clock White
Stick On Wall Clock DIY Large Modern Design Decal 3D
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SONAM Wall Clock - Gold,White
3D Wall Clock, Modern DIY Frameless Mirror Sticker Digital Large Black
Alarm Portable Clock- Multicolour
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One Voice Sonam Products Wall Clock-Red
Vintage Rustic Wood Wall Clock Round Battery Operated for Wall D
Large Digital Wall Clock Positive Countdown Function Brightness
Big Round Wall Clock - White, Coffe Brown
SONAM Round Office Wall Clock - White, Gold
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See AllWall Clocks
A clock is an instrument to indicate, keep and co-ordinate time. It refers to any device for measuring and displaying the time. The clock is one of the oldest human inventions and it has been meeting the need to consistently measure intervals of time shorter than the natural units which are the day, the month and the year. The timekeeping element in every modern clock is a harmonic oscillator, a resonator which is a physical object that vibrates repetitively at a precisely constant frequency. This object can be a pendulum, a tuning fork, a quartz crystal or the vibration of electrons in atoms as they emit microwaves. Analog clocks indicate the time by using angles; digital clocks do same by displaying a numeric representation of time either 24-hour notation or the 12-hour notation. A lot of digital clocks use electronic mechanisms and LCD, LED or VFD displays. Auditory clocks present time as sounds and this is for people who are blind, or just for people who get them for the convenience they bring.
How Modern Clocks Work
The mechanical clock was invented in the 13th century and it initiated a change in timekeeping methods from continuous processes, such as the motion of the gnomon's shadow on a sundial or the flow of liquid in a water clock to periodic oscillatory processes like the swinging of a pendulum or the vibration of a quartz crystal which is believed to have more potential for more accuracy. Almost all modern clocks use oscillation. All oscillating, mechanical, digital and atomic clocks work similarly and can be divided into analogous arts. Every clock is made up an oscillator which is an object which repeats the same motion over and over again having a precisely constant time interval between each repetition. The oscillator is also attached to a controller device. This device sustains the oscillator's motion by replacing the energy it loses to friction and converting its oscillations into a series of pulses. The pulses are then counted and the number of counts is converted into units such as seconds, minutes and hours. Then, an indicator displays the result in a form that humans can easily read and understand.
Where to Buy High Quality Clocks Online
Jumia offers a variety of digital clocks, analog clocks and many more. Get your beautifully designed wall clocks, bedside clocks and all your home decor items here at budget-friendly prices. Shop now and pay cash on delivery.