Light Essays

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    What is light? It is an electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight. (slideshare, 2014) Light is part of the electromagnetic spectrum, which ranges from radio waves to gamma rays. (Andor, n.d.) The wave theory of light A Dutch astronomer, Christian Huygens, developed the wave theory of light in the late 1600s. In this theory, he thought of light as a longitudinal wave. This theory states that light is emitted in a series of waves that spread

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    Green Light Lab

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    Title: How Different Colored Lights Affect the Growth of Plants Introduction: This experiment had multiple objectives. The first objective was to establish what colors of the light spectrum photosynthesis uses. The second objective was to determine which colors in the light spectrum help a plant to grow faster, and which slow the growth of a plant down. In photosynthesis, light energy from the sun is absorbed and reflected. When a plant has green leaves, the leaves appear green because the

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    Visible Light Lab

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    Jessica Vandeventer 23 March 2016 Quantitative Spectroscope and Visible Light Purpose/Question- The purpose of the lab is to build a diffraction grating spectroscope, and to view different lights. We also are going to draw the light spectra of the various light sources. Hypothesis– Each light sources will have a different spectral, but there will be some similarities in the different light sources. Data Tables/ Graphs – Analysis Questions- Exercise 1: Building and Calibrating a Spectroscope

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    effect of high and low light intensity specifically from leaves on any plant. The structure, dimensions and pigments of a leaf should (theoretically) all be indicators of the type of light intensity environment the plant is situated in. Light intensity is one of the factors affecting the rate of photosynthesis. Other factors are concentration of carbon dioxide, temperature and to a lesser degree, water. Light is a limiting factor when the light intensity is too low to allow the light-dependent reaction

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    Title Which frequencies and type of light aided and affected the efficiency of photosynthesis or carbon dioxide consumption in a spinach leaf? Purpose The purpose of the experiment/lab was to observe the effectiveness of different lights during the process of photosynthesis. Background Photosynthesis is a biological process. It occurs in plants, algae and specified bacteria (prokaryotes). Photosynthesis is the process where plants, algae, and bacteria convert light energy into chemical energy. These

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    Shakespeare uses light and dark as a contrast to show how the two characters are lovers meant to be, because without light there is no darkness and vice versa. During Act One Romeo is seen as dark rather than light due to his depressing moods. Now Romeo is brighter since he has met juliet, who represents light. The reader can tell that Juliet is meant to represent light, to prove further that she is, Romeo states that “Juliet is the sun” (2.2

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    The Effect of Light intensity on rate of photosynthesis Research question- How does light intensity affect the rate of photosynthesis in Spinach leaves (Spinacia oleracea)? Hypothesis- My hypothesis is that light intensity and photosynthesis rate have a positive correlation. Meaning that as light intensity increases, photosynthesis rate will increase. This is because as light intensity increase, the rate of light-dependent reactions increase since light dependent reactions use light as an energy

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    chlorophyll containing cells in green plants convert incident light to chemical energy and synthesise organic compounds from inorganic compounds (Great Illustrated Dictionary, 1984). It could also be presented by this equation (6CO2 + 6H2O  C6H12O6 + 6O2), all in the presence of sunlight (Mader, 2010). The word photosynthesis means “putting together with light” (Ashley, 2000). In order for plants to photosynthesis, a source of light energy is needed. This energy is normally obtained from the sun

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    Transformative Light in Dante’s Paradiso In medieval thought every star in the cosmos took its light from the sun, the brightest light in the universe. In Paradiso Dante engages in this belief, allegorizing it to represent God as the sun and the rest of creation as the stars. By using overt theological metaphors for light, mirrors, and reflections, he constructed a hierarchy of light in which God, the Living Light and the source of all light in the universe, is the purest form of light and as such reflects

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    Aim To observe the effect of light intensity on the rate of photosynthesis. Hypothesis Light intensity is directly proportional to the rate of photosynthesis. When the light isn’t intense, not many oxygen bubbles will be produced and thus observed. This indicates that the plant will not have enough derived energy from the sun to activate photosynthesis. Whereas, when the light intensity is great, the rate of photosynthesis will be high. Introduction Photosynthesis is the process of converting

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    How Light Affects Colors

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    Want to know how light affects colour? Is your home one of those which is airy and welcomes a lot of light? Choosing a paint colour for a space in your home is tough decision. Some homeowners can spend hours agonizing over those tiny paint chips at the hardware store before deciding on the perfect one. How frustrating is it then to spend all that money on paint, not to mention the time spent painting, only to discover the colour looks completely different (and maybe even bad) than you imagined on

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    Aim: How does light intensity affect the rate of photosynthesis in Elodea (pondweed)? Introduction: In this experiment, we were testing the rate of photosynthesis in elodea. For a plant to photosynthesize, it needs carbon dioxide and water and sunlight, a factor of photosynthesis. In order for us to measure the rate of photosynthesis, we needed to measure the products that were made, glucose and oxygen. As oxygen was a visible product, we counted the oxygen bubbles made when we moved the source

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    where light has been overcome, shown through a metaphor and symbolism. Night is used as a motif, with characters frequently calling upon it to assist them in their crimes. Symbolism of light and darkness are used to show how Macbeth and Lady Macbeth are consumed by guilt which leads to their eventual downfall, and goods return to power. Shakespeare successfully compares ideas of light and dark to convey important themes. Unnatural events that occur often were related to the concept of light and dark

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    symbolism. In the novel, Natsume Soseki impels the reader to inquire the hardships with which Sensei, K, and the narrator faced. In this novel, Soseki uses the motif of light and darkness to illustrate the duality of human nature along the lines of contrasting between expectation and disappointment. Soseki initiates the motif of light and darkness through the solid relationship between the narrator and Sensei. When Soseki cites the narrator on page 9,

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    Photosynthesis is the process the energy from sun lights to produce ATP which is used to make sugar such as glucose, sucrose, cellulose, and starch. Photosynthesis involves two different processes, which are light dependent reaction and light independent reaction. Light dependent reaction requires light energy to split water molecules (photolysis) into hydrogen ions (H^+), oxygen (O_2) and electrons to make ATP and the light dependent reaction allows plants to grow and make a waste product (oxygen)

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    5.4 Light Pollution Light pollution is the immoderate and inappropriate use of artificial outdoor light. Below are the four main types of pollution: - Urban Sky Glow: the brightening of the night sky over area occupied by humans. - Light Trespass: light falling unintentionally where it is not needed, or wanted. - Glare: cause decrease in visual discomfort due to excessive brightness. - Clutter: Grouping of bright lights that cause the inability to differentiate objects. Effect of Light

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    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 light refraction angle. It is the making component of the mechanism of a dynamic refraction

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    The Refraction of Light Waves: The bending of light is known as Refraction. When light travels from a optical less dense media such as air into a dense media such as glass,light will refract/bend towards the normal line and the speed and wavelength of the light will decrease. When light travels from a optical dense media into a less optically dense media, light will refract/bend away from the normal as it exits the dense medium.The speed and wavelength of the light will increase. When closely observed

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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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    Research Question: How does the presence of light impact the rate of transpiration in plants? Aim: The aim of this experiment was to investigate how the presence of light affects the rate of transpiration in plants. Hypothesis: As light intensity increases, the rate of transpiration (water uptake) in a plant increases. Background Information: In this experiment I will be investigating the impact of light intensity on the rate of water uptake, due to transpiration, by attaching a shoot from

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