Rabi‚ a physics professor at Columbia University‚ suggests a clock could be made from a technique he developed in the 1930’s called atomic beam magnetic resonance. 1949 Using Rabi’s technique‚ NIST (then the National Bureau of Standards) announces the world’s first atomic clock using the ammonia molecule as the source of vibrations. 1952 NIST announces the first atomic clock using cesium atoms as the vibration source. This clock is named NBS-1. 1954 NBS-1 is moved to NIST’s new laboratories
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A ‘clock’ is an instrument used to specify‚ record‚ and manage time. The word ‘clock’ comes from the French word “cloche” meaning bell‚ came into use when timekeepers were kept in bell towers in the Middle Ages. Historians do not who or when mankind “invented” a time-keeping device or a “clock”. Probably thousands of years ago when someone stuck a stick in the ground and saw a shadow of the sun move across the ground‚ known as the sundial. (Cummings‚ 1997-2012). After the Samarian culture
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learned in the class. Our case study that we picked talked about the clocks and how the society shaped the way of measuring time throughout history. The clock nowadays are technology that has been taken for granted. The focus of this case study is to show the importance of time measurement and how our life nowadays revolves around it. By going through history all the way from using the sun and stars to the development of clocks that neither lose nor gain one second in 200 million years to show how
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1.0 Introduction According to (Baillie et al.‚ p. 307; Palmer‚ p. 19) “A clock is an instrument used to indicate‚ keep‚ and co-ordinate time. The word clock is derived ultimately (via Dutch‚ Northern French‚ and Medieval Latin) from the Celtic words clagan and clocca meaning "bell". A silent instrument lacking such a mechanism has traditionally been known as a timepiece.” Design and accuracy of clocks have evolved along with progression of technology and industry and even though their main
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History of Clocks and the Impact of Electricity on them. Introduction: In this poster we are going to show you the history and the development of the clock through time and how it has impacted society. We will also show how electricity has affected the development and effectiveness of clocks. Sun clock: One of the first clocks on record is the sun clock. Sun clocks basically work on the principle that the position of a stationary object’s shadow will be in the same place at a certain
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Water clocks‚ along with sundials‚ are likely to be the oldest time-measuring instruments‚ with the only exceptions being the vertical gnomon and the day-counting tally stick.[1] Where and when they were first invented is not known‚ and given their great antiquity it may never be. The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon and in Egypt around the 16th century BC. Other regions of the world‚ including India and China‚ also have early evidence
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which non-rational or magical phenomena play a significant part’ (Manlove‚ 1975‚ 1). Following this definition‚ The Cuckoo clock would be classified as a fantasy by several elements in the story. To begin with‚ the story is based on the classic idea of a child communicating with animals or objects. In this case‚ that object would be the wooden cuckoo coming out of the clock. This idea itself is quite a common subject matter for children’s literature. For example in Little Princess‚ the little girl
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Summary Monroe Clock Company ● Started by Jim Monroe in 1985 ● Manufactures decorative electric clocks until 1992 ● In 1998‚ Monroe has sold out to Piedmont Appliance Corporation ● Currently manufactures 3 basic models ● Sales grew around $50 million (50% from Piedmont Appliance and 50% other companies) Summary New Household Timing Device ● Monroe’s Timer - 2 options: 1. One 48-hour cycle (back-and-forth motion) 2. Two 24-hour cycles (single operation/timer) ● The complete product
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MONROE CLOCK COMPANY * Issue: Jim Monroe‚ president of Monroe Clock Company‚ decided to sell a new household timing device. And this complete product would have to be sold through wholesalers and manufacturers’ representatives‚ which were new to Monroe Clock‚ so the price will be an important factor. Jim’s controller‚ Tom‚ had provided figures showing a full cost of $11.60 and factory price of $14.70‚ and Frank Tyler‚ his sales manager‚ had worked out a cost of $6.30 excluding fixed overhead
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is my Grandfather Clock. It was passed down to me from my Grandmother. I use it and admire it every day. It is definitely a work of art to me. Think of all the work that was put into making a Grandfathers clock. The definition of a Grandfather Clock is a clock in a tall freestanding wooden case‚ driven by weights. Grandfather Clocks have been a part of family legacies including my own for generations. My Grandfather clock is a “Ridgeway”. The Manufacturer is Ridgeway Clocks. They are the oldest
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