Light Essays

Properties of Light

Introduction             An electromagnetic emission of a wavelength has been referred as light. In specific, visible light is an electromagnetic radiation that can be seen with a human naked eye. In a methodical and physical framework, the term light is utilized to refer the electromagnetic spectrum as a whole. In addition, photons are considered the elementary particles of the visible light. A number of properties have been come across during the analysis of the visible light, as the light has…

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Homework in Performance Techniques

Sound Waves- A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium (such as air, water, or any other liquid or solid matter) as it propagates away from the source of the sound. The source is some object that causes a vibration, such as a ringing telephone, or a person’s vocal chords. The vibration disturbs the particles in the surrounding medium; those particles disturb those next to them, and so on. The…

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Light Affect on Plant Growth

For this Science assignment, I chose to find out if the color of light a plant receives, affects the plant growth. Light is electromagnetic radiation that comes in waves, the basic units of which are called photons. Plants use light to turn carbon dioxide into sugars necessary for growth, a process called photosynthesis. Sunlight is a full spectrum of different wave lengths of light. Seen through a prism, this spectrum turns into bands of color: red, orange, yellow, green, blue,…

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Light Pen

A light pen, also called a selector pen, is a computer input device in the form of a light-sensitive wand used in conjunction with a computer’s CRT display. It allows the user to point to displayed objects or draw on the screen in a similar way to a touch screen but with greater positional accuracy. It was long thought that a light pen can work with any CRT-based display, but not with LCDs (though Toshiba and Hitachi displayed a similar…

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Opinion Essay on Inventions

A light-emitting diode (LED) is a semiconductor light source. [6] LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Appearing as practical electronic components in 1962,[7] early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness. When a light-emitting diode is switched on, electrons are able to recombine with holes within the device, releasing energy in the form of photons. This…

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Magnetic Materials

Paramagnetic materials have a small, positive susceptibility to magnetic fields. These materials are slightly attracted by a magnetic field and the material does not retain the magnetic properties when the external field is removed. Paramagnetic properties are due to the presence of some unpaired electrons, and from the realignment of the electron paths caused by the external magnetic field. Paramagnetic materials include magnesium, molybdenum, lithium, and tantalum. Ferromagnetic materials have a large, positive susceptibility to an external magnetic field. They…

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The Fugitive Light

Fugitive Light by Mohamed Berrada is a narration of life of an old, aging painter named Al Ayshuni. Set in Tangier, the novel opens in the house of the said painter who was caught with artistic paralysis—not able to produce what he thinks into an artistic work. He could not paint or even sketch what were on his mind. In the middle of this paralysis, Al Ayshuni would be disturbed by the presence of another character: the divorced Fatima. A…

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The Hawthorne Experiments_ Illumination Test

In the early 1920s Chicago’s Western Electric Hawthorne Works employed 12,000 workers. The plant was a primary manufacturer of telephones, and in 1924 the company provided a site to cooperate with the NRC on a series of test room studies to determine the relationship between illumination and worker efficiency. The basic idea was to vary and record levels of illumination in a test room with the expectation that as lighting was increased, productivity would too. In another test room, illumination…

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All About Light Physics

LIGHT * Light is part of the electromagnetic spectrum, the spectrum is the collection of all waves, which include visible light, Microwaves, radio waves ( AM, FM, SW ), X-Rays, and Gamma Rays. * In the late 1600s, important questions were raised, asking if light is made up of particles, or is it waves .? * Sir Isaac Newton, held the theory that light was made up of tiny particles. In 1678, Dutch physicist, Christian Huygens, believed that light was…

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Organic Light Emitting Diode

Abstract: Organic Light Emitting Diode is a scalable nano level emerging technology in Flat Panel Displays and as a White Light Source with efficient features. This paper focuses on OLED structure, principle aspects, fabrication methodology and different techniques to replace current white light sources like Incandescent bulbs, Fluorescent tubes, and even display techniques like Liquid Crystal Displays, Plasma technologies. OLEDs can be fabricated using Polymers or by small molecules. OLED matrix displays offer high contrast, wide viewing angle and a…

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A Study of the Badu Mangrove Community

Abstract A investigation took place at a large mangrove community called the ‘Badu Mangroves’. The interactions of organisms and the Badu Mangrove ecosystem were observed. While experiments were carried out to determine the abiotic ( e.g. temperature, humidity, soil pH ) and biotic ( e.g. number of seedlings distributed throughout a certain area, adaptations of animals ) features in the Badu Mangrove community. Aim The aim of this report was to explore the abiotic and biotic features concerning the growth…

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The Success of Photosynthesis in Geranium Leaves

I. Abstract Photosynthesis is a process in which plants use light, water, and carbon dioxide to produce sugars, water and oxygen. Chlorophyll a and chlorophyll b, in the chloroplasts of a leaf, are responsible for absorbing wavelengths of light for use in photosynthesis with red and blue wavelengths being optimal. Testing for the most productive wavelength of light was done using four separate geranium leaves that were covered by red, green, and blue translucent filters, and black paper. The experimental…

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Significant Difference in Height of Bracken

Abstract: This investigation was designed to compare the height of Pteridium aquilinum in a light area and a dark area of Rushy Plains, Epping Forest and to establish if light intensity does have an effect on the growth of Pteridium aquilinum, commonly known as Bracken. From my research it was clear that the height of Bracken is affected by abiotic factors, other than light intensity, such as: soil moisture, soil temperature, air temperature and soil pH so I had to…

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Light and Water

When light and water are absorbed by the plant, four light photons are assigned to Photosystem II while the energy is channeled to P680. This energy triggers the P680 molecule to release four electrons toward an electron acceptor in the thylakoid membrane. To fill up the “hole” in the P680 molecule, it will strongly attract two water molecules and break it up. Two atoms of Oxygen are released and form the gas that humans need while 4 atoms of hydrogen…

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the Shoe Horn Sonata

Music and sound effects: Sonata is a musical term describing something written specifically for two musical instruments Music is a linking device throughout the play Sonata is symbol that occurs throughout the play Bridie and Sheila burst into song at the end of the first interview session Their performance effectively takes us back to her past Aurally (what one hears) and visually historical information is conveyed When Jerusalem reaches a crescendo, scene of the Japanese invasion are juxtaposed on the…

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