Essays on Light

Electromagnetic Radiation Is a Form of Energy That Is Always Around Us
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What is mostly invisible to the bare eye, makes little sound, has no taste and is always present in our lives, but has the ability to kill all the people on earth? Electromagnetic radiation is a form of energy that is always around us and in different types. There are radio waves, which are the longest and are used to transmit data ex. Satellites. Microwaves are another example of EM rays, microwaves are used to cook food and for communication.…...
ChemistryForceLightPhysics
Filtrating Dust Particles From Smoke
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Introduction Our experiment will indicate whether common household items that we have chosen is effective in filtrating dust particles from smoke and can be used as a cheaper alternative to get rid of dust in smoke which is present in a common example of air pollution in Singapore, haze. Our hypothesis is that the light intensity measured through the bottle will be the most when activated carbon is used to filter the dust particles from the smoke. This is one…...
AddictionAir PollutionChemistryExperimentLightSmoking
Imaging by UV Fluorescence
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Imaging by Ultraviolet (UV) fluorescenceSince the UV radiation has a short wavelengths than the visible light, so by using a UV-fluorescence, it is possible to identify multiple paint layers. Previous practical applications showed that the UV imaging is advantageous in detecting any retouching, varnishes, successive over-paintings and old restorations (Rizzutto et al., 2015). In fact, pigments usually show characteristic fluorescent hues when impacted to a UV light. For example, minium (Pb2O5) = orange fluorescence, while azurite = deep blue fluorescence,…...
ChemistryColorLightMaterials
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The idea of a selfluminescent stone without any form of
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The idea of a self-luminescent stone without any form of excitation seems like something impossible. However, in 1603 that was what Italian cobbler cum alchemist, Vincenzo Casciarolo had encountered. He had found greyish bright and unusually heavy stones from the countryside around Bologna, Italy. After heating the stones in the air (this process is known as calcination), they had become fluorescent in the dark. Not only was the fluorescence astonishing, but it was also persistent (for years!). This was one…...
ChemistryLightMaterials
Experiment with Pillbug Lab Report
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The essay sample on Pillbug Lab Report dwells on its problems, providing shortened but comprehensive overview of basic facts and arguments related to it. To read the essay, scroll down. ABSTRACT Pill bugs live in an outside environment where they are able to get the necessary amount of energy from organic matter. This environment is where water and organic matter is plentiful. In there natural habitat, pill bugs are found in dark, damp places. Living in moist places is important…...
BehaviorBiologyExperimentLightWater
What Is The Expected Wavelength At Maximum Absorption For Kmno4 Solution
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This sample essay on What Is The Expected Wavelength At Maximum Absorption For Kmno4 Solution reveals arguments and important aspects of this topic. Read this essay's introduction, body paragraphs and the conclusion below.Abstract In this experiment, the absorbance of KMnO4 was measured by spectrophotometric method to determine the molar concentration and the molar extinction coefficient of KMnO4. In part 1, in order to determine the maximum absorbance wavelength of KMnO4, we measured the absorbance of the sample solution which contains…...
ChemistryColorLightPhysics
The Brightening Of The Night Sky By Light Scattered From Artificial Outdoor Lighting Is Called
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The sample essay on The Brightening Of The Night Sky By Light Scattered From Artificial Outdoor Lighting Is Called deals with a framework of research-based facts, approaches and arguments concerning this theme. To see the essay's introduction, body paragraphs and conclusion, read on.Identify the major reasons causing the light pollution in urban areas. Examine the methods to control excessive usage of external lighting. BY aakk1234991 Light pollution is an issue that affects the livability of a city. Although it is…...
EnvironmentLightLight PollutionNatural EnvironmentNatureNight
Theme for English B By Langston Hughes Analysis
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This sample essay on English B provides important aspects of the issue and arguments for and against as well as the needed facts. Read on this essay's introduction, body paragraphs, and conclusion. In his poem, “Theme for English B” Hughes explains about a paper his Professor tells him to write that comes from within him and it will be a true and honest paper, but Hughes argues that his paper might not be same due to a race difference. To…...
Langston HughesLightPoetryWriters
The Approach of Krishna: C. 1600-1670
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IntroductionThe Approach of Krishna C. 1600- 1670 was a 17th-century painting from Pahari, India that uses Basholi style. My first thought of the art is a love scene in which a smitten Krishna is meeting up with his lover, who is eagerly awaiting him. The image depicts a blue-colored and elegantly-dressed Krishna, with elegant peacock feathers on his head. He seems to be holding a rose flower, which he is presumably taking to his lover, who is awaiting him in…...
ColorLight
Pigments In Spinach
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This essay sample on Pigments In Spinach provides all necessary basic information on this matter, including the most common "for and against" arguments. Below are the introduction, body and conclusion parts of this essay.Investigation of Photosynthetic Pigments in Spinach Michael Yacoub BIOL&211 Lori Hayes Introduction: Purpose: To demonstrate the existence of the pigments of photosynthesis in spinach by separating them using chromatography, then measure them using spectrometry. There are multiple pigments in photosynthesis, the varying pigments allow the plant to…...
BiologyChemistryChromatographyColorLightPhotosynthesis
Paper 3-d Toy Glasses
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This sample essay on Paper 3-d Toy Glasses offers an extensive list of facts and arguments related to it. The essay's introduction, body paragraphs, and the conclusion are provided below.Informative Speech November 15, 2011 CMM 101 E General Purpose: to inform Specific Purpose Statement: To inform my audience of two methods used for 3-D viewing. (concept) CT: There are two different methods used for 3-D viewing: anaglyphs and polarization. (chronological) Introduction: (When I was a little girl about 4 years…...
Blue Brain TechnologyLightTechnologyVision
Our Vanishing Night
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The essay sample on Our Vanishing Night dwells on its problems, providing a shortened but comprehensive overview of basic facts and arguments related to it. To read the essay, scroll down.Nowadays, we have engineered the night to receive us by filling it with light. Nevertheless, this engineering comes with serious consequence, that is, light pollution, also known as phytoplankton or luminous pollution. This is a form of environmental degradation, which results from the excessive artificial lightings. Its sources include street…...
LightLight PollutionNatureNightPollution
Photosynthesis Ib
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This sample paper on Photosynthesis Ib offers a framework of relevant facts based on recent research in the field. Read the introductory part, body, and conclusion of the paper below.This process takes place in he chloroplasts of plants, which include chlorophyll. Chlorophyll is essential for photosynthesis, since it absorbs the sun’s light. Green plants then use this light to combine CO and H2O for making sugars and oxygen. After this process Oxygen is being released though pores called stomata. The…...
BiologyChemistryColorDataLightPhotosynthesis
Refraction Of Light Lab
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The results we obtained show that on average, we calculated a sin i over sin R to be 1.34 units. Also we can say that as the angle of incidence increased, the angle of refraction tended to increase proportionally. As the sin of i increased, the sin of R also increased. Below you can see the exact relationship between the sin of the incidence angle (i) versus the sin of the refracted angle (R). To find the slope of the…...
DataExperimentLightWater
Flame Test Lab Report
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Test Lab was an experiment designed to show how elements react when heated. This Lab attempted to prove that when electrons are excited and then calm, they emit a color specific to the element. This test showed that there is a direct coloration between the heat energy being expelled and the movement of electrons from one energy level to the next. When the atoms of a gas are excited, in this case by heating, their electrons are able to move…...
ChemistryColorEnergyLightPhysics
Candle Experiment Lab Report
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Record as many observations as you can. . After that, light the candle. Observe the candle when it’s burning for at least 5 minutes. Record. 4. Blow the candle out. Observe the candle until no more changes are taking place. Observation before burning: + white *solid + the wick is black (got burned) +smell fresh Observation during burning: *fire *yellow on the very top of the wick, blue at the bottom + melting -; clear liquid *hot Observation after burning:…...
ExperimentLightOxygen
Quantum Physics Paper
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Quantum physics is a general name for a set of the natural theories originated in twentieth century, which, like the theory of relativity, mark a rupture between what is now called classical physics – all theories and physical principles accepted in the nineteenth century. The so-called “quantum” theories describe the behavior of atoms and particles – what classical physics, including Newtonian mechanics and electromagnetic theory of Maxwell, could not do – and elucidate some properties of electromagnetic radiation. Its description…...
ForceLightPhysics
Flame Test Lab
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If one can tell if a planet has oxygen on it based on its bright line spectra, research could be done to tell if people can live on the planet or not. This would be a huge advance in science if it was possible to tell if people can live on other planets by knowing the elements on the other planets. This would solve the problem of the world becoming over-populated and would help prevent the spread of disease. Introduction-…...
ChemistryColorExperimentHypothesisLightMaterials
Death In The Open Lewis Thomas
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Death in the open In the essay “Death in the Open” Lewis Thomas talks about the dead animals he finds on the side of the road and how he feels about such death. Life is about leaving an Impression in one way or another. Death is a reflection on what a person has done in the world. Thomas’ feelings towards death Is sadness and anger because of the way he reacts towards dead animals on the side of the road,…...
DeathDiseaseLightLuck
Hamza HammadScott EvansWriting 1242018In The Name Of LoveThe
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Hamza HammadScott EvansWriting12/4/2018In The Name Of Love.The essay called ‘In the name of love’ by Miya Tokumitso and suggested by Edmunson is meaning of having a darker side that makes you overlook every other class. The author states that if someone has a job and loves it they don’t consider anyone else’s dream that makes it possible of them to do what they love to do. She talks about the CEO of Apple and how labour working in his factory…...
ImmigrationLightLight PollutionLoveNatural EnvironmentPollution
Current status and future directions of light emitting diode
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CostFinally, it is necessary to address the most obvious problem that LEDs are facing at present. Of course, it is the cost, this is the very much common obstacle that stops one product going for the market. LEDs are an energy efficient way of generating light. This is true, but it is expensive to produce them. The cost of LED mainly includes two parts, which are the material itself and manufacturing. For example, modern LED bulbs often contain 4 to…...
Electrical EngineeringElectricityElectronicsFutureLightPhilosophy
Hydrogen Spectrum
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A hydrogen discharge tube is a device that can trap small amount hydrogen in a sealed tube of glass, and if potential difference is applied to that tube an emission of an atomic spectrum can be produced. The emission of the spectrum is produced from the excitation of the hydrogen electron (by the voltage) to a higher energy level and falling back to its original one. In this practical a diffraction grating is used to analyze the emitted light into…...
ChemistryLightPhysicsQuantum MechanicsScientific Method
Carb Cutter Lab
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This then prevents starch from converting into glucose and then to body fat. The crabs that aren’t absorbed then pass through the digestive tract and are excreted. From what we hear, the pill sounds like it will do wonders, but similar studies believe otherwise; “Studies by Mayo Clinic revealed that to decelerate the digestion of carbohydrate, you need between 4,000 to 6,000 MGM of bean extract or Episcopalian. Unfortunately, many Carr blockers in the market have lower than 4,000 MGM…...
CarbohydrateEnzymeExperimentGlucoseLight
Cellular Respiration Lab Report
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This is an investigation of the effect of the intensity of light (photosynthesis) have on the rate of cellular respiration (measured as the number of oxygen bubbles). We will determine whether or not it is possible to examine the relationship between photosynthesis and cellular respiration under controlled environmental conditions.Essay Example on Cellular Respiration Lab Report We will show the effects, reactions, and relationship between photosynthesis and respiration, as well as demonstrate to you how the scientific method works. Hypothesis Upon…...
ExperimentLightOxygenPhotosynthesis
Light Pollution Essay 100 Words
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“Light Pollution” is a form of environmental pollution in which excessive artificial outdoor lightings affect the natural environment. Light pollution in Hong Kong is very serious. The main reason behind that are the artificial outdoor lightings. As there are many buildings scattered in Hong Kong, artificial lighting is omnipresent. The severe light pollution reduces the number of stars that are visible in the sky. The HUSSAR Electrical and Mechanical Services Department, 20% of the total electrical consumption in Hong Kong…...
Air PollutionLightLight PollutionNatural EnvironmentPollution
Application of Colloids
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Applications of Colloids| Colloids play a very important role in nature, in our daily life and in industry. Some of the important applications of colloids are discussed below. 1. Food stuffs and medicines: Many of our food stuffs are colloidal in nature. Milk, butter, whipped cream, fruit jellies, ice cream, bread etc. are all colloidal in nature. For example, milk is an emulsion of butter fat in water, stabilized by milk protein (casein). Ice cream is a dispersion of colloidal ice…...
ChemistryLightMaterialsSoapWater
In this experiment I will be investigating the efficiency of a motor
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Safety: In this experiment it is important to consider the safety aspects when carrying out this practical task; I will make sure of the following things before starting the experiment: * The circuit has been connected correctly according to the circuit diagram (Previous page) * Make sure that the connected leads are all working in order and are not tangled * Check that the motor is working correctly * The Power supply is working, and the voltage is not exceeding…...
EmotionEnergyExperimentHopeLightPhysics
Infrared and Ultraviolet Light
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Name: Tutor: Course: Date: Infrared and Ultraviolet Light Infrared Light Infrared light is a form of electromagnetic radiation whose wavelengths are longer compared to visible light. The electromagnetic spectrum exhibits a vast range of wavelengths spanning from highly energetic gamma rays and short wavelengths to low-energy radio waves and long wavelengths. The visibility of this spectrum is extremely small. Infrared light is similar to normal light only that it has a longer wavelength thus making it impossible to see with…...
ChemistryLightPhysics
Photosynthesis Formal Lab Report
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This captured energy is used to convert carbon dioxide into complex energy-rich molecules that can be used by themselves or other organisms. "Photosynthesis is the conversion of light energy to chemical energy in the form of sugar and other organic molecules. " (Russell, Wolfe, Hertz, & Starr, 2010). Photosynthesis can be categorized into two main processes: light-dependent reactions and light-independent reactions. For the purpose of this lab, light- dependent reactions will be investigated. The reactants involved in photosynthesis include carbon…...
BiologyChemistryLightPhotosynthesisPlant
lighting quiz 2
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1. The following building type combines more diverse functions and needs than any other building type: residential 2. Recommended reflectances for ceilings, walls, and floors (in that order) are approximately as follows: (a) 80%, 60%, 30% 3. The following is an advantage of furniture-integrated luminaires: (c) they enable flexibility in terms of changing layouts 4. The following lamp type would be ideal for an industrial application: (b) high-intensity discharge (HID) 5. Name two benefits of high street-lighting illuminance values. 5.…...
Interior DesignLight
lighting quiz 1
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The key to energy savings with daylighting is: (b) to provide responsive and operable controls for the electric lighting system 2. Daylight factor (at a point) is best described as: (c) the ratio of interior daylight illuminance to exterior daylight illuminance 3. Assuming a given sky type, daylight factor (DF): (a) at a specific point is generally constant throughout the day 4. The daylight within a building consists of the following components: (c) sky component, externally reflected component, internally reflected…...
ColorLightLight PollutionPhysics
The effect of temperature on the permeability of beetroot cells
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Although an apparent trend is illustrated by the experimental data plotted, I am reluctant to formulate a valid conclusion on the effect of temperature on the permeability of beetroot cells due to the variability of the results obtained. Although five repeats were performed, the data collected is not reliable because of variation within the sets of results. This could have been due to various limitations of the experiment. At 30oC for example, the reading for absorbance of light in arbitrary units,…...
BiologyCellDataExperimentHeatLight
Compare and Contrast Vertebrate and Invertebrate Vision
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Although vertebrates and invertebrates originally evolved from a common ancestral root, both have developed very different physical utilities for vision. Both are fairly effective and have taken many millions of years to evolve. They contain many common underlying mechanisms but differ in the features used to provide them. The definition of an eye is 'an organ of visual perception that includes parts specialized for optical processing of light as well as well as photoreceptive neurons' (Alberts). The main feature of…...
BiologyColorContrastEyeHealthHuman Body
The Pulfrich phenomenon
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IntroductionWhat is the Pulfrich Phenomenon?The Pulfrich Phenomenon is a three dimensional semblance where a traveling object is seen to travel in an anomalous tract when viewed binocularly with a light rarefying filter placed in forepart of one oculus. This creates the semblance that an object oscillating on a frontal plane appears to follow an egg-shaped tract. The most widely accepted theory for this semblance is that cut downing the brightness of a stimulation to the retina of one oculus causes…...
BrainEyeLightNervous SystemPerceptionVision
Contrast sensitivity measurements
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Introduction:The purpose of the experiment was to find if comparable contrast sensitiveness measurings could be taken utilizing different psychophysical methods.Contrast Sensitivity is defined as `` the ability of the oculus to observe luminosity contrast " . ( Millodot, M, 2009 ) It is of import as it makes objects stand out from one another. Contrast Sensitivity proving provides a better apprehension of the patients public presentation of real-world undertakings than ocular sharp-sightedness measurings. ( Lay et al, 2009 ) It…...
ContrastLightNervous SystemVision
Retort stand and clamp
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In reference to the safety aspect, the radiation source is kept inside a lead block, inside a wooden box, inside another wooden block, tongues are present for the movement of the source so it never directly handled. The sources themselves are in holders, which channel the radioactive output in one direction alone. However as I am working with Gamma radiation this is slightly irrelevant. Also the rad-count dector will be placed in a clamp, to ensure it's constant position. The…...
ChemistryExperimentLightPhysics
bio lab pill bug
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What are the Effect of Different Environments and the Movement of Pill Bugs? Purpose: The purpose of this lab was to analyze pill bugs activity in different environments and determine the effect of wet/dry or dark/light environments have on them and how taxis takes place in their choices in living in areas. Background information: Terrestrial isopods are commonly referred to as sow bugs and pill bugs and have other nick names as well. These pill bugs are also related to…...
ExperimentLightPrivacyResearch
Rrl of My Classmte as Example
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Various eye problems have been associated with overexposure to sunlight. CAUSE Ultraviolet Ray WHY? People are unaware of what UVR can cause to their vision/eye sight. WHY? Insufficient spread of information to the public. Sub Problem How can we completely inform the public about the dangers caused by the UVR? INTRODUCTION Another radiation from the sun can harm not only your skin but also your eyes. Extended exposure to the sun’s UV rays has been linked to eye damage, which…...
EyeLightOzone LayerSunVision
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What Is The Expected Wavelength At Maximum Absorption For Kmno4 Solution
...I got the sample of unknown number 15. We’d already known the value of the path length and the extinction coefficient, so we could calculate the concentration using the Beer’s Law. The solution was diluted to 25ml, so, in order to determine the i...
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