shore. Clough’s poem personifies the waves as “tired”. In the third stanza‚ he comments on the fact that though they move endlessly‚ they never seem to actually make any progress. In the first stanza‚ “Dover Beach” describes the sound of waves as a “grating roar” and details their movements in the line “Begin‚ and cease‚ and then again begin”. Both poems are commenting on the same qualities of the sea. They both reference its timeless‚ steady motions. The poems also seem to recognize an almost melancholy
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Dover Beach Mathew Arnold Time and Place Matthew Arnold (1822-1888) wrote "Dover Beach" during or shortly after a visit he and his wife made to the Dover region of southeastern England‚ the setting of the poem‚ in 1851. They had married in June of that year. A draft of the first two stanzas of the poem appears on a sheet of paper he used to write notes for another work‚ "Empedocles on Etna‚" published in 1852. The town of Dover is closer to France than any other port city in England. The body
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spectra of various chemical elements obtained by diffraction in crystals. * The Moseley’s law. * Periodic Table. * Early X-ray crystallography * development of early X-ray spectrometry equipment * Moseley’s discoveries resulted in a more accurate positioning of elements in the Periodic Table by closer determination of atomic numbers. * He observed and measured the X-ray spectra of various chemical elements obtained by diffraction in crystals. Through this he discovered a systematic
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what side of the energy spectrum their wavelengths are on. Materials: • Hydrogen lamp • Mercury lamp • 2 diffraction devices • Flashlight • Paper • Pencil • Calculator Procedure: 1. Place the hydrogen lamp in the power source and turn it on 2. Do the same thing with the mercury lamp on a separate table 3. Look through the diffraction device and look at several colorful lines 4. Record the colors of the lines and what element they were for on a sheet
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different sizes (7‚ 29‚ and 89 nm mean values) were synthesized using gallic acid in an aqueous chemical reduction method. The nanoparticles were characterized using transmission electron microscopy (TEM)‚ dynamic light scattering (DLS)‚ X-ray diffraction (XRD)‚ and ultraviolet–visible (UV–Vis) absorption spectroscopy; the antibacterial activity was assessed using the standard microdilution method‚ determining the minimum inhibitory concentration (MIC) according to the National Committee for Clinical
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INTRODUCTION 1.1. Nickel Nickel is a chemical element with atomic number 28. It is denoted by the symbol ‘Ni’ and is one of the main constituent of meteorites. It was discovered in 1751‚ by Axel Fredrik in Sweden. It belongs to the transition metal group and is known for its hardness and ductility. Significant chemical reactivity is exhibited by pure Nickel. Nickel in its pure or low-alloy form is used in several fields as it is highly resistant to various reducing chemicals. Nickel when annealed
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Hummingbirds are birds that comprise the family Trochilidae. They are among the smallest of birds‚ most species measuring in the 7.5–13 cm (3–5 in) range. Indeed‚ the smallest extant bird species is a hummingbird‚ the 5-cm Bee Hummingbird. They hover in mid-air by rapidly flapping their wings 12–80 times per second (depending on the species). They are known as hummingbirds because of the humming sound created by their beating wings‚ which sometimes sounds like bees or other insects. To conserve energy
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in the presence of Fe3O4 nano particles to synthesize polyaniline/Poly(p-hydroxyaniline)/ Fe3O4 (PAN/PHAN/ Fe3O4) composites. The composites‚thus synthesized have been characterized by Fourier transfer infrared(FTIR) spectrophotometer and X-ray diffraction . The morphology of these composites was studied by scanning electron microscopy. (Received September 29‚ 2009; accepted October 23‚ 2009) Keywords: Conductivity ‚ polyaniline ‚poly(p-hydroxyaniline)‚ Fe3O4 ‚ nanocomposites . 1. Introduction
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CBSE XII | PHYSICS Sample Paper - 1 CBSE Board Class XII Physics Sample Paper - 1 Time: Three Hours Maximum Marks: 70 General Instructions (a) All questions are compulsory. (b) There are 29 questions in total. Questions 1 to 8 carry one mark each‚ questions 9 to 16 carry two marks each‚ questions 17 to 25 carry three marks each and questions 27 to 29 carry five marks each. (c) Question 26 is a value based question carrying four marks. (d) There is no overall choice. However‚ an internal choice
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FT-IR studies and X-ray diffraction study confirmed the presence of individual components. SEM revealed highly interconnected macro and micro-porous structure which is likely to favor cell adhesion and attachment with nutrient delivery to tissue regeneration site. The porous magnetic
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