3 PPISMP SN/PI/PC Experiment 9 Topic Magnetics field Purpose To study the behavior of a bar magnet in varying magnetic fields at the end of a solenoid and hence estimate the horizontal component BH of the Earth’s magnetic fields. Theory A magnet is an object that can exert a magnetic force to any object around it. When a ferrous object is placed near it‚ the magnetic force will attract it towards the magnet. The magnetic force forms a magnetic field around the magnet which is invisible
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Dr. Probst 06/05/2012 The Physics of an MRI Machine There are many physical concepts used in a Magnetic Resonance Imaging‚ also known as MRI‚ machine. There are many physical concepts used when an MRI is taken of the body‚ such as; radio waves‚ resonance and pulse sequences‚ magnetic fields being produced and lastly‚ magnets. Radio waves much stronger than the magnetic field of the Earth are sent through the body which causes the nuclei in the body to move to a different position
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The Paleomagnetic Time Scale is simply a recording of the different position of poles historically. It was initially created by measuring the magnetic inclination of different areas with seafloor spreading. The lava from seafloor spreading settles and a collection of the magnetic inclination from different locations helped us determine the age and pole locations at the time (see figure
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It is a type of scan that is used in medical settings to evaluate and come to a diagnostic conclusion of the body. This process involves the use of both strong magnetic fields and radio waves in order to produce the image needed to assess the person’s well being. The MRI scan has proven to be effective in examining different parts of the body‚ and the following are examples: Brain‚ spinal cord‚ internal organs‚ heart and blood vessels‚ bones. A normal human adult will have up to 60% of water within
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2010 HIGHER SCHOOL CERTIFIC ATE EXAMINATION Physics Centre Number Section I (continued) Part B – 55 marks Attempt Questions 21–32 Allow about 1 hour and 40 minutes for this part Student Number Answer the questions in the spaces provided. These spaces provide guidance for the expected length of response. Show all relevant working in questions involving calculations. Question 21 (2 marks) The optimum angle for safe re-entry of a space vehicle into Earth’s atmosphere is angle B. Outline
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Exploration in the commonly accepted sense began with people like the sea-faring Columbus when‚ in the middle ages it was realized that the earth is a globe‚ not flat. It held a crucial role for centuries in colonization and trade expansion. In the 19th century startling results were achieved by wealthy and gifted amateurs. However quite early in this century virtually the whole of the earth’s surface had been mapped in outline‚ and most of it surveyed by explorers on foot. The process has more recently
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In 1882‚ Nikola Tesla discovered the rotating magnetic field‚ a fundamental principle in physics and one of the greatest discoveries of all times. In February‚ 1882‚ Nikola Tesla was walking with his friend through a city park in Budapest‚ Hungary. Tesla was reciting stanzas from Goethe’s Faust‚ the sun was just setting‚ when suddenly the elusive solution to the rotating magnetic field‚ which he had been seeking for a long time‚ flashed through his mind. At this very moment‚ he saw clearly in
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endorsed by University of Cambridge International Examinations Physics for Cambridge IGCSE Complete seCond edition Teacher’s Resource Kit Ian Collins 2 PRACTICAL Name: 2.2 Acceleration due to gravity using a ticker tape timer Aim: To determine a value for the acceleration due to gravity‚ g. Equipment: n ticker tape timer n ticker tape n pulley mass n string n adhesive tape n 30 cm rule n scissors n glue n Introduction As an object falls freely it will accelerate towards the centre
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Functional Mri (fMri) The technique uses an MRI scanner to measure the blood oxygenation level-dependent (BOLD) signal. The BOLD changes are generally correlated with the underlying synaptic activity. Spatial resolution is 1–10 mm‚ and temporal resolution is 1–10 s. In general‚ the higher the spatial resolution‚ the lower the temporal resolution. Of the three imaging technologies described in this Box‚ fMRI has a substantial advantage in resolving small structures and those that are deep in the
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The Gauss Rifle: A Magnetic Linear Accelerator Macalino‚ D. M. D. Magpantay‚ J. M. Recto‚ I. J. Reyes‚ R. Francisco‚ P. V. 4 – 5 Zatti IDT 4 In partial fulfilment for the requirement in Physics Don Bosco Technical Institute – Makati SY 2011-2012 Ms. April J. Cruz Research Adviser Chapter I – Introduction I. Background of the Study It was either the Chinese or the Greeks who discovered
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