Flame Test Lab Your company has been contracted by Julius and Annette Benetti. They are worried about some abandoned‚ rusted barrels of chemicals that their daughter found while playing in the vacant lot behind their home. The barrels have begun to leak a colored liquid that flows through their property before emptying into a local sewer. The Benettis want your company to identify the compound in the liquid. Earlier work indicates that it is a dissolved metal compound. Many metals‚ such as
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Methods of study The laboratory study has tow division; the first one is for examining the characteristics of studied alabaster and the weathering process acting on alabaster used in Luxor and Karnak temples. The second division in this work is to examine and evaluate four co-polymer resins selected as stone surface consolidating for the weathered alabaster. Various alabaster samples have been collected from Wadi Sannur quarry and Wadi Assiuty quarry. Archaeological samples were taken from the statues
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because electrons have wavelengths about 100‚000 times shorter than visible light photons. They can achieve better than 50 pm resolution and magnifications of up to about 10‚000‚000x whereas ordinary‚ non-confocal light microscopes are limited by diffraction to about 200 nm resolution and useful magnifications below 2000x. The electron microscope uses electrostatic and electromagnetic lenses to control the electron beam and focus it to form an image. These electron optical lenses are analogous to the
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As a species‚ human beings have a truly remarkable capacity for perception. We are able to see and interpret visual stimuli‚ and process this information in a way that is meaningful to us. We can also perceive the location of a sound‚ transform pressure changes in the air into meaningful sentences‚ and create myriad tastes and smells from our molecular environment. But are these perceptual abilities innate or learned? 19th century psychologists believed that newborns and young infants experience
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. Physics Module Form 5 chapter 1 : Waves GCKL 2011 1.1 U N D E R S T A N D I N G W A V E S What is meant by a wavefront State the direction of propagation of waves in relation to wavefronts What is transverse wave? An imaginary line that joins all the points on the crest of a wave. The direction of propagation of a wave is perpendicular to its wavefront. A transverse wave is a wave in which particles of the medium oscillate in the direction of the propagation of the waves. Water
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discussed. 3.1 Free Space Path Loss Model (FSPL) Free-space path loss (FSPL) is the loss in signal strength of an electromagnetic wave that would result from a line-of-sight path through free space‚ with no obstacles nearby to cause reflection or diffraction. Path loss in free space PLFSPL defines how much strength of the signal is lost during propagation from transmitter to receiver. FSPL is diverse on frequency and distance. The calculation is done by using the following equation: PLFSPL= 20log10(d)+20log10(f)
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400 mg per kilogram. Cassava is prepared by peeling and grating the root‚ soaking it in water for at least 3 days‚ drying in the sun and finally grinding it into flour that can be used to make the porridge. If cassava is peeled and soaked in water for 24 hours then sun-dried for four days‚ this falls to 80 mg per kg. If peeled and soaked for FIVE days and then sun-dried for a week this figure is further reduced to 30 mg per kg. Grating before soaking can reduce this amount even further to 10 mg
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JAMES WEBB SPACE TELESCOPE Lachlan Milligan Part 1: Research of an Optical Instrument or Device The James Webb Space Telescope (JWST)‚ named after James Webb who played a pivotal role in the Apollo program‚ is renowned for replacing the Hubble space telescope due its uncontested visibility (HubbleSite‚ 2015)‚ created by modern technology. The JWST cost $8.7 billion US (NASA JWST‚ 2016) and is scheduled to be launched in October 2018 and will offer unparalleled resolution from long-wavelength
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Biotechnol. J. 2010‚ 5 DOI 10.1002/biot.200900221 www.biotechnology-journal.com Research Article Biosynthesis of metal and oxide nanoparticles using Lactobacilli from yoghurt and probiotic spore tablets Anal K. Jha1 and K. Prasad2 1University 2University Department of Chemistry‚ T.M. Bhagalpur University‚ Bhagalpur‚ India Department of Physics‚ T.M. Bhagalpur University‚ Bhagalpur‚ India Green‚ low-cost‚ and reproducible Lactobacillus-mediated biosynthesis of metal and oxide nanoparticles
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De Broglie began from Bohr’s equations which showed that (as a particle) the angular momentum of the electron would be a multiple of h/2π. Diffraction is something that only waves do. Barrier From this he was able to show that (when showing its wave properties) the electron would have a wavelength related to its mass and velocity: with gaps in it Parallel wave fronts approach the
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