Coloured X-ray Of A 17-jewel Wrist-watch #2 is a photograph by D. Roberts/science Photo Library which was uploaded on February 21st, 2021.
Coloured X-ray Of A 17-jewel Wrist-watch #2
Wrist-watch. Coloured X-ray of a 17-jewel wrist- watch, showing the internal mechanism. Internal cogs and gears of the watch escapement can be seen.... more
Title
Coloured X-ray Of A 17-jewel Wrist-watch #2
Artist
D. Roberts/science Photo Library
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Photograph
Description
Wrist-watch. Coloured X-ray of a 17-jewel wrist- watch, showing the internal mechanism. Internal cogs and gears of the watch escapement can be seen. Some of the small circles contain ruby jewels used in bearings. An escapement is a device within a watch which provides periodic impulses to the balance wheel that helps to regulate time- keeping. Jewels, whether natural or man-made, are used in watch bearings because their smooth surfaces offer little friction resistance and are hard-wearing.
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February 21st, 2021
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