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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PROPELLER CLOCK OBJECTIVE :- In this project‚ our aim is to use PIC or 8051 microcontroller to control a row of LEDs to function it as a clock. ABSTRACT :- The Propeller Clock is an electronic device which has a series of LEDs on board that rotate with the help of a motor to give an illusion of a watching a clock ( Digital or Analogue ). This requires a DC motor which rotates the PCB connected to it with sufficient speed so as to create the illusion. The LEDs are connected to a microcontroller
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"Propeller Clock" Mechanically Scanned LED Clock Seven light emitting diodes spin‚ giving the illusion of numbers in the air An Overview: Top View Side View How this clock works: A motor spins the "propeller"‚ and a small microprocessor keeps track of time and changes the pattern on seven LEDs with exact timing to simulate a 7 by 30 array of LEDs. It is an illusion‚ but it works nicely. To build this clock‚ few things are needed‚ including: 1. Skill with motors and mechanical
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The Life Cycle and the Social Clock Early models of adult development sometimes assumed that marriage is a requisite life task for full adulthood. Stage models posited a linear set of stages that people progressed through over the course of a lifetime. The concept of the social clock describes societal expectations for the time at which people are expected to marry‚ have children‚ and accomplish other life tasks. What are the implications of these expectations for the ways in which people who are
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Strategy as Simple Rules by Kathleen M. Eisenhardt and Donald N. Sull Reprint r0101g When the business landscape was simple‚ companies could afford to have complex strategies. But now that business is so complex‚ they need to simplify. Smart companies have done just that with a new approach: a few straightforward‚ hard-and-fast rules that define direction without confining it. as Simple Rules ILLUSTRATION BY MIN JAE HONG S by Kathleen M. Eisenhardt and Donald N. Sull ince its founding
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Discuss the difference between individual and institutional discrimination and give an example of each. • Individual discrimination involves negative attitudes and beliefs that people hold about specific race/gender group/ethnic etc. The assumption that a certain race‚ gender group is intellectually inferior or incapable of certain achievements. (DeVito‚ 2013) I went on a vacation in Africa with white friends and I realized that every place we went I was treated different by those that offered
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Introduction Genetics is the science that explains the variation and transmission of inherited characteristics from parents to offspring. The basic laws of heredity became popular to science in 1865‚ with the publication of the works of Gregor Mendel‚ the father of genetics. He observed that by breeding pairs of different varieties of peas‚ the offspring resembled one of the parents. This inspired him to continue his work that resulted to more experiments on plants. Before starting this exercise
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times of day? Do you ever notice lower energy periods where you would kill for the time to take a nap even though you haven’t been doing anything? Our daily up and down pattern is a good example of our body’s natural rhythms. But now that body clock may actually help
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Chemical Kinetics: The Iodine-Clock Reaction: S2O82−(aq) + 2 I−(aq) → I2(aq) + 2 SO42−(aq) To measure the rate of this reaction we must measure the rate of concentration change of one of the reactants or products. Here‚ it is convenient to carry out a clock reaction involving the product I2. To do this‚ you will include (to the reacting S2O82− and I−) i) a small (but accurately known) amount of sodium thiosulfate‚ Na2S2O3‚ and ii) some starch indicator. The added Na2S2O3 does not interfere with
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Investigating the effects of changing concentration: iodine clock reaction. Abstract This is an experiment to show the Iodine Clock Reaction. To create a chemical reaction to see how long it takes for solution to change to a dark blue Color. When changing the concentration of the iodide (K1) and adding distill water to make it up to 5cm³ each time. This is to see if the reaction takes less with less concentration or faster with more concentration added to the peroxodisulphatee. So with the solution
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