![]() A grandfather clock is a tall clock that stands on a floor.It is used by people to wake up from sleep at a time they choose. An alarm clock is a clock that makes a sound (often a buzzing or a bell-like sound) or plays music at a certain time.A Sundial is an old form of a clock which uses the Sun to tell time.This help stops the watch from being lost. It usually has a small chain which is connected to the person's clothing. ![]() It is held in place by two straps connected to the watch and then wrapped around the wrist and connected to each other. They are different in what they are used for, what they can do or how they are made. There are many different types of clocks and watches. Hourglass in wooden stand A lot about clocks They can also be used by people with mental problems that cause them to be unable to read other clocks. Some special clocks are often used by people who are blind or cannot see well enough to read an analog or digital clock. ![]() Many clocks that do this are old and are driven by springs or weights rather than batteries or other forms of electric power. The sound could be as simple as a bell or so complex that it sounds the same as a person. There are also clocks that use sound, usually along with a dial or some other means, to show the time. New digital clocks can even correct themselves using the internet or radio signals. Digital clocks are usually smaller and easier to both use and read than analog clocks but they can also be made much larger. Unlike analog clocks which are based on 12 hours, digital clocks can use either a 12-hour clock (often with am for morning and pm for afternoon/night) or a 24-hour clock. LCDs and LEDs are common for digital clocks. Digital clocksĭigital clocks use numbers to show the time. The second and minute hands take 60 movements to move all around the face of the clock, the hour hand only needs 12 movements to do the same. When the minute hand moves all the way around the face of the clock (which takes 60 minutes), the hour hand moves forward one section. When it moves all the way around the clock, the minute hand moves forward one space. For example, the second hand moves around the face of the clock in 60 seconds. This hand is usually about as long as the minute hand, but much thinner.Įach hand shows the time it is named for and moves around the face of the clock one complete rotation for each movement to the next larger hand. Clocks with three hands also have a second hand. If it has two, there is a large hand or minute hand and a smaller hand, the hour hand. Analog clocks commonly have two or three hands. It will often have the numbers one through twelve on the face to make it easier to read. The position of the hands shows the time. They have hands that rotate around the clock's face. Analog clocksĪnalog clocks use angles to tell time. The two most common types of displays on clocks are " analog" and " digital". There are many types of clocks and watches. Spring driven Matthew Norman carriage clock with winding key
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