Electromagnetic radiation Essays

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    with the production, measurement and interpretation of spectra due to interaction of electromagnetic radiation with matter which is absorbed or emitted by atoms of a sample. This absorption or emission occurs when the atoms of the sample move from one energy level to another in presence of light. In other words, it is a science which deals how light interacts with matter. When atoms or molecules absorb electromagnetic energy, the incoming energy promotes the molecular system to a higher energy level

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    Electromagnetic radiation can be an alternative medicine, especially since procedures involving these radiation are non-invasive. This essay explains how electromagnetic radiation is used in biomedical engineering, and describes how the procedures are performed. It also outlines the disadvantages of using electromagnetic radiation. Electromagnetic radiation was first discovered in the early 19th century. William Herschel discovered infrared radiation, and Johann Wilhelm Ritter discovered ultraviolet

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    Radiation can be defined as the energy travelling through space which comes from a source and may be able to penetrate various materials. There are two types of radiation and they are the non-ionizing and ionizing radiation. Non-ionizing radiation consists of light, radio and microwaves. Whereby ionizing radiation can produce charged particles in matter, and ionizing radiation is produced by unstable atoms. The difference between unstable atoms and stable atoms is that unstable atoms have an excess

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    Spectroscopy Lab Report

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    Introduction Spectroscopy is a term which refers to the interactions of various types of electromagnetic radiation with matter. It is also a study of the absorption and emission of light and other radiation by matter. Dependence of this process related to the wavelength of the radiation. Spectrometers are used to measure the properties of light over a specific portion of the electromagnetic spectrum. Fig 1: Dispertion of the visiable light 2. Theory

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    Nt1210 Lab 10.1

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    Unit D Summary: Light and Geometric Optics 10.1:Light and The Electromagnetic Spectrum Chapter 10.1 covers light and the electromagnetic spectrum. This chapter starts off by describing how light is a form of energy that travels in waves. The properties of said waves include a crest (the highest point of the wave), the trough (the lowest point of the wave), and the rest position (the level of a wave without energy). The three most important properties of a wave are the wavelength, the amplitude

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    Flame Test Lab Report

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    record. The known compounds ' results could be compared to the unknowns. The reason the light, of flame was emitted is because of electrons moving from excited state to ground state, releasing energy. Often times this energy is visible part of the electromagnetic spectrum, 400-750nm. Different wavelengths result in different colors. Knowing roughly what the the wavelength of the substances are, the energy of the substance can be found the equation E=ch/λ. The breakdown of this equation is E stands for

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    Atomic Line Emission Lab

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    The emission spectrum of a chemical element is the spectrum of frequencies of electromagnetic radiation due to an atom or molecule making a transition from a high energy state to a low energy state. There are a lot of electron transitions for each atom. All transitions have a energy difference. After doing the atomic line emission lab my results came out in many different ways. During the lab, we went to five different stations. Throughout the stations, the light that we used to figure out the quantization

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    Colorimeter Lab Report

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    natural or artificial source falls on a colored homogenous medium contained in a glass container, the color of the medium is the complementary color of the light that has been absorbed by the medium. During this interaction between the medium and the radiation, a portion of light is absorbed by the medium, a portion is reflected and the rest is transmitted. The intensity of the incident light I0 is the sum

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    Spectrophotometry Essay

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    1.1. UV-SPECTROPHOTOMETRY Spectroscopy is the measurement and interpretation of electromagnetic radiation absorbed or emitted when the molecules or atoms or ions of a sample move from one energy state to another energy state. Spectroscopy is a general methodology that can be adapted in many ways to extract the information you need (energies of electronic, vibrational, rotational states, structure and symmetry of molecules, dynamic information). Ultraviolet-Visible Spectrophotometry is one of

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    Photochromic Synthesis

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    Greek words “phos” (light) and “chroma” (color) and is used to describe a substance that changes color on exposure to light. More formally, photochromism is a reversible transformation of a chemical species, induced by the absorption of electromagnetic radiation, involving two forms, A (inactive) and B (active), each having different absorption spectra. Generally, form A is colorless while form B is a colored solution. Most dyes, inevitably return to the more stable form, the colorless state. Each

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    Glow Sticks Research Paper

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    The researcher has discovered various items concerning glow sticks via the internet and books. One interesting fact that was revealed was that the speed of light in water is about ¾ of its speed in empty space. The researcher will be providing more information concerning light, glow sticks, and temperature (Light). Lighting generally refers to artificial light, and we use the artificial light inside and outside. Without lighting, we can not use windowless area’s twenty-four/seven. Lighting provides

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    Light is a component of the electromagnetic spectrum, the spectrum is that the assortment of all waves, that include light, Microwaves, Radio waves, X-Rays, and Gamma Rays. In the late year’s of 1600s, vital problems were raised, asking if light is made up of particles, or is it waves .? Sir Isaac Newton, held the idea that light was created from little particles. In 1678, Dutch scientist, Christian Huygens, believed that light was made up of waves moving up and down perpendicular to the direction

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    How ocular artifacts are formed? Ocular artifacts are formed by any type of movement of eye; this can be explained by the type of the movement of the eyeand even by the blink of an eye.Here, the Front polar (Fp) and Front (F) are the electrodes which placed near or above the ocular region such that, these electrodes are mainly affected with the ocular artifacts. Considering the eye as the dipole which can state as that front part cornea is more positively charged than the retina. This makes the

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    The mural on the radio city had a central section that showed a large hand holding a sphere emerging from an ambiguous machine (Linsey 50). These features explore the major theme of the art that of the interrelationship between the biological and the physical world (Linsey 50). The mural also depicts a clear bolt of lightning being captured by electrical equipment. These images have a common source in mass culture history, that of real scientific experiments (Linsey 50). The features in the mural

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    Introduction: The objective of this experiment was to use a spectrophotometer to calculate the absorbance wavelength for the commercial dyes that were given. Light is composed of tiny particles that are called photons, just like matter is composed of tiny particles called atoms. Using the spectrophotometer you can see that different dyes absorb at different wavelengths. With all of the experimentation done the concentration, absorbance and the max wavelengths should be found. Figure 1: Schematic

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    Spectrophotometry Prepared for: Dr. Joseph Dasso By: Lucy Onsarigo Biology 1406 C5L September 23rd, 2014 Introduction Spectophotometry is the ability of molecules to absorb and transmit light energy for determining the concentration of substances in a solution. (Mark Garcia 2014). The instrument used is called spectrophotometer to distinguish different compounds since they absorb light at different wavelength. Some have wide range of wavelength and the shorter the wavelength the higher

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    Arsenopyrite was discovered by G. Agricola of Germany in 1546 (Reciprocal Net), it is a arsenic ore and has the chemical formula FeAsS, meaning it contains iron, arsenic, and sulfur. The molecular weight of it is 162.83 gm and contains about 34.30% Fe, 46.01% As, and 19.69% S as its main components (David B.). The general physical description of Arsenopyrite can be depicted as a light steel gray or tin white, opaque, and non-florescent . If formed as the crystal, the hardness of those crystals is

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    Our Experiences Make Us Who We Are The novels The Perks Of Being a Wallflower by Stephen Chbosky and Catcher In The Rye by J. D. Salinger both narrate stories about a teenager’s struggles. The protagonists respectively, Charlie is about to start high school and Holden has been expelled from his last school just like he did from the previous four schools he has gone to. They both are going through typical teen problems but they both also have their odd, complicated problems as well. Their many struggles

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    One of the most known theories that explain the mechanism of accommodation is the theory of Hermann Helmholtz which was introduced in 1855. According to his theory, light refraction, getting on a retina, is carried out through a crystalline lens. It is composed of fibers. It depends on it what subject will be visible legibly. Not only the crystalline lens, but also radial and circular muscles regulate a crystalline lens tension. The crystalline lens is not a solid body – it’s elastic allows to change

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    Refraction: Refraction occurs when light enters a more or less optically dense medium, which therefore has a different refractive index (measure of the velocity light can travel at in the medium compared to in a vacuum in which it can travel at 2.9 x 108ms-1). This causes the light’s speed to increase or decrease, which results in the rays bending towards or away from the normal, so the position of the image formed is dependent on the refractive indices of the two media. For refraction to occur

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