The first modern thermometer‚ a mercury thermometer with a standardized scale‚ was invented in 1714 by Daniel Gabriel Fahrenheit‚ a German physicist who also invented the alcohol thermometer in 1709 and the mercury thermometer in 1714. Before Fahrenheit‚ Galileo Galilei and Santorio Santorio both created their own type of thermometers but both of their instruments could not measure the exact temperature. It only indicated temperature differences which classified their instruments a thermoscope. In
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Dairy of a cotton worker 9th January 1812 Dear diary‚ A few days ago my father was employed as a cotton weaver at the largest factory in Manchester. He was only taken in unless me‚ his nine year old son would also join the business. So today was my first day at the factory and I was only there for three hours as I was a new employee. As I walked through the entrance you could hear the loud clatters of metal and the constant banging of wood. The smell was foul and you could see a stream outside
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dropping pipette vertical so they are even‚ of a caffeine solution. • Allow the Daphnia to rest in the caffeine for 30 seconds. • Place the cavity slide under the microscope and focus so you can see the Daphnia’s heart clearly. • Set up a stop clock and assign someone to start and stop it when appropriate. • Then‚ using a pen and paper‚ watch the Daphnia’s
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concentration. I think that the time the solution takes to clear will increase as the neutrase is diluted more. What equipment will I use? The equipment I will be using is: 10cm" of neutrase 10cm" of milk 1 Measuring cylinder 1 Small beaker 1 Stop clock 2 Test tubes I have the option to use a water bath but I have decided not to use one. This is because I want to do the experiment at room temperature and so do not want to change the temperature of the solutions. How will the equipment be set up
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depending on the size of the fish pond and the volume of the fish. This study aims to develop a system to help the Fish Farmers in doing their job. That is‚ to secure the Fish pond and to lessen the feeding process. The system named‚ Fish Pond Security Alarm with Automatic Fish Feeder which allows the user to set the timer of the system to automatically disperse food over the Fish pond‚ And sets the
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Advantages of Rain Alarm 1. Conserve Water There is a lot of water that you can save by using a rain sensor. By automatically turning off your lawn irrigation system every time it rains‚ the conserved water can be used in other essential purposes such as fighting fire. 2. Prevent Disease Damage and Nutrient Loss Over-watering prevent the roots of your plants from reaching deep into –the ground making your plants vulnerable to disease. Over-watering is also one of the major cause of
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moves at its own pace. It cannot be commanded. It does not wait for kings or princess and has no pity for beggars. .It cannot be analyzed. It can not be criticised. We are generally conscious about passing time and its importance. We have developed clocks and watches to indicate its flow. We have invented dates‚ days and years to indicate and measure it in our own way‚ but mind me‚ it is really indivisible and immeasurable. People say time is money. But I am saying that it is more precious than
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Monica Page Natiana Lee Damali Olukayode Ready to Wear Analysis: Watches Watches evolved from portable spring driven clocks‚ these watches first came about in the 15th century in Europe. Watches are portable time pieces that were made possible by the invention on mainspring. In 1868 Patek Philippe invented the very first wrist watch for Countess Koscowicz of Hungary. In 1880 Constant Girard industrialized the concept of wrist watches that were geared toward German naval officers. At this time
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This is the PLC of Titan Most of us are aware of the phrase ‘Product Life Cycle (PLC)’. For the uninitiated‚ I shall give a very brief description before I begin with the main topic. According to the PLC concept‚ a product’s life is divided into 4 major stages: introduction‚ growth‚ maturity and decline. In the growth stage‚ since the category is relatively new‚ promotion is focused on communicating functional benefits‚ generally to a small consumer segment. In the growth stage‚ when a decent
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IELTS Secret Key #1 - Time is your greatest enemy Monday‚ 23 April 2007 To succeed on the IELTS‚ you must use your time wisely. Many students do not finish at least one module. The table below shows the time challenge you are faced with: Module Total time Questions Time for each question Listening 30 min 40 .75 min Reading 60 min 40 .67 min Writing 60 min 2 30 min Speaking 11-14 min N/A N/A As you can see‚ the time constraints are brutal. To succeed‚ you must ration
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