Telescopes in Astronomy Once upon a time‚ we believed the Earth was at the center of our universe. We were seriously mistaken. We have come to find that at the center of most galaxies is a giant black hole that keeps everything together. With the use of telescopes‚ we have made it possible to see the “impossible”. We are able to see the geographic landscape of distant planets and moons. Telescopes have made it possible to measure the speed of light‚ understand gravity‚ and grasp other laws of physics
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AIMS/OBJECTIVES; To determine the percentage of copper in brass by UV-visible spectroscopy. INTRODUCTION Electromagnetic radiation‚ of which ultraviolet and visible light are but two examples‚ has properties of both waves and particles. When light acts as a particle‚ called a photon‚ each light particle possesses a discrete amount of energy called a quantum. When a molecule is exposed to electromagnetic energy it can absorb a photon‚ increasing its energy by an amount equal to the energy of the photon
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produced is doubling in every two years. (in 2010 – 1.8 zettabytes) The cost of creating‚ managing and storing the data is decreasing‚ but can the optical storage expand further? The current Blu-ray lasers emit light in the blue part of the electromagnetic spectrum (about 420 nanometer wavelength). There are ongoing researches using UV light‚ that would probably have to be 200 nm and would provide storage capacities of over 100 GB in a single layer. However there are lots of commercial issues with UV
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No Mr. Einstein‚ that is not insanity‚ that is autism. Autism is a developmental disability that causes problems with social skills and communication. Autism can be mild or severe. It is different for every person. Autism is also known as autism spectrum disorders.Children whether they have disabilities or not must be treated with love and encouragement‚ it all takes a big hug‚ a kiss in the cheek or by saying the words‚ “I love you‚ my child” to show them that we care. I see autism as having many
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As the title of this lesson suggests‚ this lesson focuses on the efficiency of appliances and how we can calculate this‚ introduces ourselves to the various forms of energy‚ how this energy is transformed‚ and discusses recommendations to conserve it. This lesson started by stating the importance and multiple uses that we give electricity. This is the main (and only as far as I can tell) source of energy that our electrical devices need to work and give us all of the amenities that we have come
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light in spinach leaves. This was done by separating the photosynthetic pigments (chlorophyll a‚ chlorophyll b‚ carotene and xanthophylls) from one another using paper chromatography. The separated pigments were then analyzed for their absorption spectrum using a spectrographometer. When the data was graphed it clearly showed the higher rate of red light absorption over green light. These results along with previous research indicate the importance of red light in photosynthesis and the minor role
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Section 2.5‚ Chapter 18‚ and Section 19.1 Introduction Spectrophotometric determinations based on the Beer-Lambert Law are among the most widely used analytical procedures. These methods involve the measurement of the fraction of incident electromagnetic radiation that is absorbed by a sample. To determine the concentration of a colored species in solution‚ a cuvet containing the solution is placed in the spectrometer‚ which consists of a spectrograph and a photometer. The spectrograph produces
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Definition Autism Spectrum Disorder (ASD) is a developmental/neurocognitive disorder. It can effect a person’s social interactions‚ communication‚ and behaviors of daily living. It is named Autism Spectrum Disorder because there is not just one set of symptoms. The symptoms range from individual to individual. Some characteristics of autism include repetitive behaviors‚ issues with social skills‚ inappropriate affect or no affect‚ hypersensitivity to sound‚ and nonverbal tendencies (Center for Disease
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Introduction The purpose of this experiment is to conclude the concentration of an unknown solution using colorimetry to plot a calibration curve. Colorimetry measures the absorption of light at wavelengths within the visible region of the electromagnetic spectrum. It can be used to identify the unknown concentration of a solution in reference to a solution of a known concentration. When a solution appears coloured‚ you see the colour that has not been absorbed by the molecules. A light beam is
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Spectroscopy is one of the most powerful analytical techniques in modern science. Spectroscopy works by correlating the concentration of a species in solution to the amount of light it absorbs. It included the observations of absorption or emission of electromagnetic radiation resulting from transitions of atoms or molecules from one energy level to other level. The spectrophotometer measures how much light is absorbed at a given wavelength. When an atom or molecule absorbs energy‚ electrons are promoted from
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