Refractive index measurement is actually a measurement of the speed of light in a medium. The speed of light (usually denoted by c) is 299 792 458 m/s in vacuum. In other media the speed of light is lower than this value‚ and the refractive index‚ R.I.‚ of a medium is a measure of how much the speed of light is reduced in the medium. The refractive index (n) of a medium is defined as the ratio of speed of light in vacuum (c) in to that in the medium (v) The speed of light in a medium depends on
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Global Pandemic in Modern Times When we are talking of the possibility of a global pandemic it is not so hard to imagine as it is a current reality‚ the risk and rate of infection seems to be steadily on the increase. A pandemic is a worldwide epidemic that‚ according to the World Health Organisation‚ (WHO) has to meet three conditions; the infectious microbe infects and causes serious illness to humans and humans don’t have immunity against the Virus. This virus can also be spread from person to person
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Experiment 3: Soil pH measurement Introduction Aims The aims of the experiment were to determine the pH of a variety of soils which included sedentary‚ 3:2‚ sand‚ organic matter with the means of a pH meter at various soil water ratios and with or without calcium chloride. Method and Materials Samples of sedentary soil‚ 3:2 soil‚ sand‚ organic matter and compost‚ 100ml vials(x12)‚ bottle of distilled water‚ analytical balance‚ pH meter‚ 2 buffer solution of known pH‚ 0.25M calcium
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Primitive/Civilized In the film “The Gods Must Be Crazy” by Jamie Uys‚ there is a contrast between the primitive and the civilized society. The civilized society has come a long way since its primitive days. Its hard to imagine that there are still people in this world that live without the advantages and developments of a civilized society. Those living in a civilized society would must likely believe that their society is better than that of a primitive society‚ but like wise a primitive
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not boil at 100°C could be because we are not at sea level; the pressure could be lower. B. While heating two different samples of water at sea level‚ one boils at 102°C and one boils at 99.2°C. Calculate the percent error for each sample from the theoretical 100.0°C. 1st sample 1.96% error 2nd sample 0.81% error C. An unknown‚ rectangular substance measures 3.6 cm high‚ 4.21 cm long‚ and 1.17 cm wide. If the mass is 21.3 g‚ what is this substance’s density (in grams per milliliter)
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From the Baroque period through the Postmodern era there are three artist that stands out to me with their work. Rembrandt’s Resurrection of Christ is a wonderful piece of art with its reflection of the Roman Soldiers and the reassuring presence of Christ. In 1808 Goya’s Third Day of May is a work that was created during the realism period. Which due to the war during this time it affected many artists by changing the content of their work to real life events. Like many others during this era this
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Definition and Measurement April Mena PSYCH 525 Gary Moore March 11‚ 2013 There are many definitions for intelligence and with these definitions comes assessments and achievement test to verify the information found in the definition. This paper will cover some of the various definitions and which one relates to the achievement test and assessments reviewed. One must first understand that the definition of intelligence is still highly debated and has been for a very long time‚ since the first
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The number we assign to some object‚ idea‚ or behavior is entirely arbitrary‚ although in some cases a tradition may establish the rules of assignment. If measurements are assigned arbitrary numbers‚ they are called nominal numbers‚ and their sole purpose in the analysis is to differentiate an item possessing one characteristic from an item possessing a different characteristic. Nominal data is a type of categorical data in which objects do not have a natural‚ meaningful order. You can count
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Lab #3 January 30‚ 2012 1. Title: Laboratory Techniques and Measurements 2. Purpose: The purpose of this lab is to learn laboratory techniques and to how to measure precisely. During this lab I will learn how to measure length‚ temperatures‚ volume‚ density‚ and mass using laboratory equipment. I will be using laboratory equipment to prepare dilutions and calculate them while using an algebraic formula. 3. Procedure: In order to perform this lab I needed the following materials:
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Basic Lab Measurements and Equipment Purpose This lab experiment displays the accuracy of scientific measuring equipment. This experiment also helps to familiarize the students with these instruments. Procedure: Measure Volumes and Masses 1. Obtain a 400mL beaker and record its mass in grams. 2. Add 40mL of water to the beaker and record the volume. 3. Records the beaker’s mass now with the added water 4. Transfer the water from the beaker to a 50mL graduated cylinder and record the measurement
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