produced was saved. 7) The main component in UV-VIS unit along with the diagram of the unit was drawn. 8) Spectrum obtained was analyzed based on wavelength peak and compared against calibration curve. 9) The analyte concentration found in the unknown was determined. 10) All the findings were summarized based on the spectrum obtained and related information derived from the experimental work and from references. STANDARD OPERATING PROCEDURE FOR UV-VIS UNIT Start-Up A. Equipment 1. The power
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To deduce if UV Radiation induced a mutation in the DNA of Serratia Marcescens and prevented the production of the red pigment called Prodigiosin. Hypothesis: Maybe the disappearance of red color in Serratia Marcescens is caused by the UV light which induces mutations in its DNA and is known as a common mutagen. Prediction: If UV light mutates the DNA of Serratia Marcescens then the red pigment colonies of the bacteria will no longer be produced. Independent Variable: Ultra Violet Radiation
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Ultraviolet rays can be separated into three different wavelengths. UVA‚UVB and UVC. this way they can be differentiated due to their wavelengths and the amount of energy they contain. UVA contains the least amount of energy and a smaller wavelength. UV-A radiation passes the earth’s atmosphere almost unfiltered. As both UVB and UVA rays can be detrimental to our health‚ it is important that we protect ourselves. UVC contains the highest amount of energy and a bigger wavelength. When the uv rays enters
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Energies are many folds‚ they are available naturally‚ and are also made available through science and technology in different ways‚ intended for the purposes we desire. This light that enables us to see‚ the x-rays (which gives us pictures of bones and soft tissue)‚ the gamma and ultraviolet rays (which are used for sterilization)‚ infrared‚ the microwave (microwave ovens and cell phones)‚ radio waves‚ extremely low frequency waves etc. are all packed in the radiation that emanates from the sun. From
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ABSTRACT: By exposing Brassica rapa seedlings to UV-C light‚ the effect of the growth and development of Brassica rapa seedlings was tested. The experimental group of Brassica rapa seedlings was exposed to 254 nm UV-C light for thirty seconds after one week of growth. Throughout the duration of one month‚ the height‚ number of leaves and stem diameter were measured sporadically. After one month‚ the biomass of the seedlings was recorded. A starch analysis test was also performed. According to the
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Dominik Laszczkowski 11/12/12 Test Essay In The Effect of Gamma rays on Man- in – the Moon Marigold by Paul Zindel‚ Beatrice‚ the single mother of Tillie and Ruth‚ has multiple internal and external conflicts which present barriers to living a normal life. A single mother whose life has gone awry‚ she copes with it through self-hatred‚ cynicism‚ and drug abuse‚ and by verbally (and at times physically) abusing her two daughters But she finds other ways to sustain herself. There are many internal
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Technology’s Effect on Humans Technology is taking over the lives of countess numbers of people. Since the early 1400’s‚ humans have been creating mechanical appliances to aid in their daily lives. With the formation of these electric assistants‚ humans have created multitudinous artifacts to help both themselves and the planet they inhabit‚ as well as advance farther into the realm of understanding how the commodities here work. In recent years‚ humans have become preoccupied by gadgets like cell
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The fundamentals of UV-Vis spectrophotometer make use of visible light and ultraviolet radiation to analyze a substance chemical structure. A light source is shined on a sample‚ and depending on the property of the material‚ it may absorb or transmit the energy at specific wavelengths. UV-Vis spectrophotometer is used in analytical chemistry for the quantitative determination of things such as transition metal ions. The UV-Vis spectrophotometer measures the amount of light
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Research has shown that Manta Rays and Devil Rays are cousins but are different types of marine life. Although they are cousins‚ they are different. They have different body types‚ different habitats and different intelligence levels. If you ever see a manta ray or a devil ray‚ they look very similar. It may not look like they have different bodies but they do. A manta ray can grow to a size of 7m (23ft) and weigh up to 3‚600 pounds. It has 18 rows of teeth on their lower jaw. Their eyes are on
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Keckler Mrs.Palange English 10 11 October 2012 Paul Zindel ‘s Purpose Tupac Shakur had described this ability to overcome adversity in his poem‚ “The Rose That Grew From Concrete”. Paul Zindel tells this type of scenario in his play The Effect of Gamma Rays On the Man in the Moon Marigolds. There are three characters in his play‚ Beatrice‚ the mother‚ Ruth‚ a daughter‚ and Tillie(Matilda)‚ the other daughter. Beatrice raises Ruth and Tillie in verbally abusive environment. Ruth’s character
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