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    The Philosophy of Birches

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    as good as its most adoring advocates claim. [. . .] "Birches" . . . contains three fairly lengthy descriptions that do not involve unusual perspectives. In fact, the most original and distinctive vision in the poem--the passage treating the ice on the trees (ll. 5-14)--is undercut both by the self-consciousness of its final line ("You'd think the inner dome of heaven had fallen") and by the two much more conventionally perceived environments that follow it: the rural boyhood of the swinger

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    Storms

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    Cirrostratus is made of many types of ice crystals. However, four crystal shapes are responsible for producing most of the commonly see haloes-plate crystals, columns, capped columns and bullets. The most obvious halo is found around the sun. If the layer of cirrostratus is extensive, you'll see an entire ring. Within the layer of cloud, sunlight is striking and passing through the sides of randomly-oriented ice crystals. As the sunlight passes through each crystal, the light changes direction, or refracts

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    The Gum Benzoin Tree

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    food preservative, therefore its capable of slowing down/halting the growth rate of bacteria that inhibit most foods. Benzoic acid is an organic molecule and in its crystalline (solid) state exists as a white powder, basically looks like tiny white crystals. Benzoic acid is a polar solute that is soluble in boiled water and less soluble in water at lower temperatures. Benzoic acids melting temperature is 122 degrees Celsius this enables it to dissolve in boiled water, although water must be heated above

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    should be soluble in the hot solvent but insoluble in the cold solvent. The impurities should be insoluble in all temperatures of the solvent or slightly soluble in a cold solvent. The boiling point of the solvent should be low enough to remove the crystals. The solvent should not react chemically with the solids that are being purified. The solvent needs to have a boiling point lower than the melting point of the solids. -Dissolution – the mixture

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    Physics of Glacier Flow

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    and wants moves down slope. - The snow compresses to become ice and flows through the glacier into the ablation zone where it is lost. - If the accumulation equals the ablation than the glacier is said to be in equilibrium and its position will not change. This does not mean that the ice will not flow! Accumulation Zone The area where inputs occur into a glacier system. This usually occurs near the top of the glacier or ice sheet and such inputs to the system include snowfall, wind blown

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    Lyotropic Liquid Crystalline Polymers Introduction to Liquid Crystalline Polymers & Brief History Liquid crystals (mesophase) are basically those compounds that have an intermediate state, thought of as forth state of matter. It has properties of both standard liquid and solid crystal. It can flow like a liquid, but its molecules are arranged in ordered manner. These are made from organic compounds and mostly used in displays like LCDs. (Chapoy, 1985) Liquid crystalline polymers are basically a

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    Avalanches

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    there be more snowfall. Since snow doesn’t bond to the crust it becomes a potential for an avalanche zone. Another way is for surface hoar to develop, or large ice crystal on the snow. This is usually caused by condensation on the snow surface. This will also have poor bonding characteristics, and cause for a potential slide. The crystal itself is also very stable and will stay in that formation until melted usually. Slab avalanches usually only occur between 35-45 degree slopes and on a concave

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    The Uses of Salt

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    are sodium and chlorine [chloride]. Its chemical name is sodium chloride (NaCl). “In chemistry, common salt is one of a large number of electrolytic compounds classified as salts. The compound occurs as a mineral in the form of crystals and the forms of the crystals are generally cubic and are transparent.” (Encyclopedia Americana 163) Halite (sodium chloride) comes from the Greek “halos”, meaning salt and “lithos” meaning rock, and is better known as “rock salt”. Salt is produced by the evaporation

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    Physics of Skiing

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    between water, ice and water vapor, the three forms of water found on Earth. Snow changes properties and is difficult to measure and study in its natural environment. Snow changes properties and is difficult to measure and study in its natural environment. Ice Crystals form when water vapor condenses around and freezes upon a foreign particle such as dust or sea salt. These Ice crystals then form various varieties of snow flakes. Snowflakes can fall in many forms, including ferns, crystals and needles

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    Sugar

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    is derived, dates back unknown thousands of years. It is thought to have originated in New Guinea, and was spread along routes to Southeast Asia and India. The process known for creating sugar, by pressing out the juice and then boiling it into crystals, was developed in India around 500 BC. In 510 BC, hungry soldiers of the Emperor Darius were near the river Indus, when they discovered some "reeds which produce honey without bees". Evidently this early contact with the Asian sources of sugar

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    Physics of Snow

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    The most basic form of an ice crystal is a hexagonal prism. This form occurs because certain surfaces of the crystal, the growth facets, grow very slowly. The reason these facets exist derives from the molecular structure of water, and how water molecules arrange themselves into a crystalline lattice. The hexagonal prism includes two hexagonal "basal" faces and six rectangular "prism" faces. Note that the hexagonal prism can be "plate-like" or "column-like", if the length along the c-axis is short

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    took place for 20 minutes. An orange liquid was obtained and placed in a 125 mL Erlenmeyer flask along with 25 mL of water and 2.5 mL of conc. Sodium bisulfate soln. The solution was then placed in an ice bath to precipitate and then the solid product was filter in a Buchner funnel. These crystals were then re-dissolved minimum amount of hot solvent (heptane) and recrystallized. Once a dry product was obtained, a melting point was established (2,4-Dibromoanisol mp 55-58 C) and percent yield was established

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    Three Stages of Thunderstorm Formation The kind of thunderstorms that produce our summer rains are called ordinary thunderstorms, or air mass thunderstorms. They form when warm, humid air rises in an unstable atmosphere. Warm air cools down as it rises, and once it becomes colder than the air around it, it will begin to fall back down. In an unstable atmosphere, the temperature of the surrounding air decreases faster with height than the temperature of the rising warm air. This causes the warm

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    Potential application in food industry There is a great promise of application of ice structuring proteins in food that are frozen. Ice structuring proteins can inhibit re-crystallization during freezing storage, transport and thawing, thus preserving food texture by retarding cellular damage and minimal loss of nutrients (for fruit and vegetables like strawberries, raspberries, tomatoes) by reducing drip (Griffith and Ewart, 1995, Feeney and Yeh, 1998, Breton et al., 2000, Wang, 2000). Re-crystallization

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    Supercooling

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    high altitude. The clouds contain tiny drops of water and when there are no seeds to trigger the crystallization it doesn't turn to ice, no matter how cold it is. Although, in everyday life there are seed to trigger crystallization. The answer to why this works can be found in the physics of crystallization. To form a crystal you need something that the crystals can grow around a, nucleus of regularly arranged atoms (Science in school). Crystallization occurs most often when a liquid touches

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    Gemstones and Crystals

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    precious gemstones and crystals. There are many people now and days rediscovering the many uses of gemstones and crystals. To my knowledge each, have many different uses. They can be used as adornments, for health, for healing and for spiritual practices. You have probably never even heard of stones or crystals in this fashion before. I am going to take this opportunity to tell you what I know about this fascinating world that I have grown very accustomed to. I am not a gemstone/crystal specialist but,

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    (the solvent) by heating. A solution is made, this is the dissolved solute in solvent. The solution is left to cool down, and the temperature at which the solute crystallizes is recorded. 3. Put more 4g water in the test tube. This makes the crystals dissolve again. 4. Do these things more than 6 times. 5. Make a table of the result. 6. Draw a graph, using a line of best fit. Table of the results: Total grams of KClO3 g Total volume of distilled water cm3 Temperature at

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    Mars:

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    Recently, two probes were sent back and they made it to Mars. They landed on the South Polar Caps of Mars. That is where NASA plans to find water. After landing on Mars, the probes extracted water like crystals from the surface of Mars. They found that there was a small amount of water in the crystals, which means that there is a strong chance that life, was on Mars at one time. In a recent interview with Bruce Jakosky, Ph.D., Professor of Geologic and Planetary Sciences at the University of Colorado

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    Marie Curie

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    birth to two daughters Irene(1897) and Eve(1904). Pierre Curie(1859-1906) obtained his doctorate in the year of his marriage, but had already distinguished himself in the study of the properties of crystals. He discovered the phenomenon of piezoelectricity, whereby changes in the volume of certain crystals excite small electric potentials. He discovered that the magnetic susceptibility of paramagnetic materials is inversely proportional to the absolute temperature, and that there exists a critical temperature

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    emission tomography and works by an instrument collecting radiation emitted from a radioisotope injected the patient’ body. The strengths of emission are recorded by a gamma camera, which has a series of scintillation crystals, each connected to a photomultiplier tube. The crystals convert the gamma rays, emitted from the patient, to photons of light, and the photomultiplier tubes convert and amplify the photons to electrical signals. These electrical signals are then processed by a computer to generate

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