A Clock is a device used to keep, measure and indicate time. Clocks are said to be one of the oldest inventions of the human being, meeting a dire need to measure intervals of time shorter than the natural units like the day or the lunar month or the period of the entire year. Devices working on various physical processes have been used over a very long time. Some of the predecessors of the modern clock were often based on the movement of nature and were also termed as clocks. The one which shows time by representing the shadow of the sun on a flat surface is called a sundial. In order to measure the duration time, instruments like hourglass have been used. There are also water clocks which are considered to be one of the oldest time measuring devices. The major advancement came into the manufacturing system of clocks after the invention of verge escapement, which made possible the production of the first mechanical clock in 1300s in Europe. It used to keep time with oscillating timekeepers like balance wheels.
In horology, traditionally the clocks which did not strike hourly with some sound were known to be a timepiece and the one which produce the strike sound was called a clock.
In this sub category you can download free PNG images: Clock Objects. In this category "Clock" we have 159 free PNG images with transparent background.
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Alarm Clock Clipart
Format: PNG
Resolution: 1024x1201
Size: 798.5KB
Downloads: 299
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Digital Clock Image
Format: PNG
Resolution: 665x423
Size: 135.4KB
Downloads: 297
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Clock Png Image
Format: PNG
Resolution: 3503x3504
Size: 764.2KB
Downloads: 292
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Digital Clock Transparent
Format: PNG
Resolution: 793x220
Size: 11.7KB
Downloads: 290
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Vintage Clock Transparent Background
Format: PNG
Resolution: 768x768
Size: 850.1KB
Downloads: 263
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Point House Astrology Angle Horoscope Download Free Image
Format: PNG
Resolution: 589x595
Size: 64.9KB
Downloads: 188
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Small Wall Black Clock Download HD
Format: PNG
Resolution: 1280x1024
Size: 377.9KB
Downloads: 98
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Wall Green Clock Free HD Image
Format: PNG
Resolution: 506x505
Size: 203.7KB
Downloads: 98
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Wall Clock Green Classic Free Transparent Image HQ
Format: PNG
Resolution: 852x851
Size: 30.7KB
Downloads: 98
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Wall Black Round Clock Free HQ Image
Format: PNG
Resolution: 1360x1342
Size: 645.5KB
Downloads: 98
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Wall Big Black Clock HQ Image Free
Format: PNG
Resolution: 512x512
Size: 84.6KB
Downloads: 94
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Wall Black Clock PNG Image High Quality
Format: PNG
Resolution: 1280x1280
Size: 406.2KB
Downloads: 91
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Wall Photos Green Office Clock
Format: PNG
Resolution: 715x635
Size: 925.1KB
Downloads: 90
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Wall Alarm Black Clock Download HQ
Format: PNG
Resolution: 1920x1080
Size: 467.2KB
Downloads: 89
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Wall Green Clock Free Download PNG HD
Format: PNG
Resolution: 2002x989
Size: 308.1KB
Downloads: 88
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Wall Vector Black Clock PNG Image High Quality
Format: PNG
Resolution: 600x598
Size: 47.7KB
Downloads: 85
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Wall Green Clock Free Clipart HQ
Format: PNG
Resolution: 1100x1100
Size: 1.2MB
Downloads: 84
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Wall Photos Circle Green Clock
Format: PNG
Resolution: 718x718
Size: 55.2KB
Downloads: 81
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Wall Circle Green Clock Free Transparent Image HD
Format: PNG
Resolution: 908x1920
Size: 117.9KB
Downloads: 81
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Wall Black George Jensen Clock
Format: PNG
Resolution: 1024x1024
Size: 622.0KB
Downloads: 79
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