. 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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STPM/S(E)960 PEPERIKSAAN SIJIL TINGGI PERSEKOLAHAN MALAYSIA (MALAYSIA HIGHER SCHOOL CERTIFICATE) PHYSICS Syllabus Second Edition This syllabus applies for the 1999 examination and thereafter until further notice. However the form of examination for Physics stated in this booklet was first implemented in the 2001 examination as announced through a circular‚ Pemberitahuan MPM/2(AM)/2000. Teachers/candidates are to advised to contact Majlis Peperiksaan Malaysia for the latest information about the
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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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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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Reaction mechanism of tert-butylation of phenol with tert-butyl alcohol over H-beta zeolite: An ONIOM study | 作者: Nie‚ XW (Nie‚ Xiaowa)1‚3‚4; Janik‚ MJ (Janik‚ Michael J.)2; Guo‚ XW (Guo‚ Xinwen)1; Liu‚ X (Liu‚ Xin)1; Song‚ CS (Song‚ Chunshan)1‚2‚3‚4 | 来源出版物: CATALYSIS TODAY 卷: 165 期: 1 页: 120-128 DOI: 10.1016/j.cattod.2010.11.070 出版年: MAY 16 2011 | 被引频次: 2 (来自 Web of Science) | 引用的参考文献: 50 [ 查看 Related Records ] 引证关系图 | 摘要: Tert-butylation of phenol with tert-butyl alcohol
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Many people believe that DNA was discovered in 1950 by Watson and Crick‚ but they are misguided‚ in fact it was discovered almost centuries before by a number of less known scientists. Genes were discovered to be heritable from parents by a humble pea grower by the name of Gregor Mendel in 1866. Since then we have discovered that DNA‚ also known as deoxyribonucleic acid‚ is the carrier of genes‚ traits that pass down from generation to generation.The reality is that the credit didn’t go to everyone
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Nature of Waves Vibrations or oscillations are closely related to waves. Waves are created whenever objects vibrate or oscillation. Periodic Motion * A repeated motion that occurs back and forth over the same path at regular intervals. Examples: * A Child on a swing * A wrecking ball swaying to and fro * A swinging pendulum of a grandfather clock Simple Harmonic Motion (SHM) * Is a type of motion along a straight path in which the acceleration is proportional to the displacement
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Structural Analysis of Serine Peptidase-Inhibitor Complexes When analyzing these structures‚ we observed a reasonably strong hydrogen bond interaction (distance ~ NVL ≫ AAoF ≈ NVoL. Surprisingly‚ the unmodified AAF compound showed a substantially higher level of activity over the unmodified NVL compound. Initially‚ we hypothesized that the modified compounds (No H-Bond) would be less active. To our surprise‚ both modified compounds‚ AAoF and NVoL‚ showed negligible activity (Figure 16). Additionally
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