It takes one hour (sixty minutes) to make a complete rotation from 12 to 12. The minute hand rotates more slowly around the dial. ![]() For every rotation of the second hand, the minute hand will move from one minute mark to the next. The second, or sweep, hand moves relatively quickly, taking a full minute (sixty seconds) to make a complete rotation from 12 to 12.On some models, a very thin "second" or "sweep" handĪll three hands continuously rotate around the dial in a clockwise direction – in the direction of increasing numbers.The time is read by observing the placement of several "hands", which emanate from the centre of the dial: Most modern clocks have the numbers 1 through 12 printed at equally spaced intervals around the periphery of the face with the 12 at the top, indicating the hour, and on many models, sixty dots or lines evenly spaced in a ring around the outside of the dial, indicating minutes and seconds. The green and red shaded areas denote 3 minute periods during which radio silence was maintained to facilitate listening for distress calls at 2182 kHz and 500 kHz respectively. A ship's radio room wall clock during the age of wireless telegraphy showing '10:09' and 36 seconds'. In the analog clock, the minute hand is on "14" minutes, and the hour hand is moving from "12" to "1" – this indicates a time of 12:14. Reading a modern clock face '12:14' in both analog and digital representations. Occasionally, markings of any sort are dispensed with, and the time is read by the angles of the hands. The clock face is so familiar that the numbers are often omitted and replaced with unlabeled graduations (marks), particularly in the case of watches. Clocks using only Arabic numerals first began to appear in the mid-18th century. Longcase clocks (grandfather clocks) typically use Roman numerals for the hours. The two numbering systems have also been used in combination, with the prior indicating the hour and the latter the minute. Clocks can indicate the hour with Roman numerals or Hindu–Arabic numerals, or with non-numeric indicator marks. Some special-purpose clocks, such as timers and sporting event clocks, are designed for measuring periods less than one hour. This is similar to the 12-hour dial above, except it has hours numbered 1–24 around the outside, and the hour hand makes only one revolution per day. The term is less commonly used for the time display on digital clocks and watches.Ī second type of clock face is the 24-hour analog dial, widely used in military and other organizations that use 24-hour time. The face may also include a second hand, which makes one revolution per minute. A long minute hand makes one revolution every hour. In its most basic, globally recognized form, the periphery of the dial is numbered 1 through 12 indicating the hours in a 12-hour cycle, and a short hour hand makes two revolutions in a day. JSTOR ( February 2015) ( Learn how and when to remove this template message)Ī clock face is the part of an analog clock (or watch) that displays time through the use of a flat dial with reference marks, and revolving pointers turning on concentric shafts at the center, called hands.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. It does not store any personal data.This article needs additional citations for verification. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. ![]() The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". ![]() The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly.
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