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Essays in Physics category
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The Geltard Classification
... due to the downward movement of solids relative to the bubble. This force creates a circulation within the bubbles, the velocity of which attains the rise velocity of bubbles. When these bubbles coalesce the solids in the wake are pulled ...
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The MOSFET - Metal-Oxide-Semiconductor-Field-Effect Transistor
... began research into semiconductors, and in 1947 Shockley, Brattain and Bardeen created the first "point-contact germanium transistor" (Maxfield & Montrose) followed closely by Shockley's first design on the bipolar junction transistor in 1950. Frosch and Derrick, in 1957, discovered that ...
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The purpose of this essay is to demonstrate how disregarding the philosophical approach at solving physics problems, on the basis of a concrete example of dimensionality establishment, leads to serious consequences, and to what extent. A
... We examine this problem using our solutions [1]. II. Philosophy of Basic Concepts of Measures A. As is well known, physical measurement of a quantity A is the comparison expressed by the relation Ar = A / EA. Here, A is an absolute ...
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The purpose of this experiment was to find the normal force and the lift curve slope by measuring the static pressure distribution around a symmetrical aerofoil.The experiment involved studying the distribution of pressure for different angles of attack
... surfaces enclosing the load bearing structure. The aerofoil diagrams are in figure 2 and 3. Lift When the aircraft is cruising in straight and level flight, at low altitudes, the wings are set at a small angle, 2 to 5 degrees, to ...
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The relationship between wire length, width, area and resistance.
... not want to state at this time whether or not these results will be directly proportional. For this experiment I will need the following apparatus: 1 x wire board 1 x ammeter 1 x voltmeter 1 x labpack 6 x wires 1 x micrometer 2 x crocodile clips 1 ...
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The Squash Ball Experiment
... kinetic theory deals with atoms vibrating as they receive more energy and they then break their bonds. This is linked to this experiment as the squash ball's atoms get more energy and vibrate more before breaking their bonds to become ...
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The three different crystallographic planes shown are for a unit cell of a hypothetical metal.
... three planes of the unit cell is shown below: We can see from the above figure that one edge of the (001) plane must be equal in length to one edge of the (101) plane. There is only one possible orientation ...
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To see how one variable affects the speed at which alcohol evaporates.
... will evaporate faster the hotter the water is underneath it. Method: See Plan. Diagram: Results: Test 1 Test 2 Temperature Of Water ( C) Volume Of Alcohol Left (Ml) Volume Of Alcohol Left (Ml) 70 9 9 60 9.3 9.2 50 9.4 9.3 40 9.5 9.4 30 9.7 9.7 Conclusion: I found out that the hotter the water underneath the alcohol, the quicker it evaporates. The 70 ...
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Tungsten in light bulbs.
... into the atoms that make up the filament. The energy of each impact vibrates an atom, which means the current heats the atoms up. Bound electrons in the atoms that are vibrating are boosted temporarily to a higher energy level. When ...
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Using 6 mm thick low carbon steel plate as the parent material. Deposit a weld bead on each side of the parent using the shielded metal arc process. Vary the size of electrode in each case.
... precautions in welding with gas include: a number of one-way safety valves fitted to regulators to prevent gasses which might cause the cylinders to explode from re-entering the pipes. The pipes are colour coded to prevent any confusion between the ...
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Using a Ballistic Pendulum To Demonstrate the Law Of Conservation of Momentum.
... the end of the pendulum. The pendulum must be capable of incorporating the projectile so that the collision is inelastic and the projectile and pendulum move as a single unit. Examples would be a bullet into a block of wood, ...
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Van de Graaff Electrostatic Generator
... as it contacts the surface of the belt. It occurs for the same reason that a balloon becomes charged with static electricity when rubbed on clothing. The belt and roller surfaces become statically charged. The belt becomes weakly positive (because ...
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VHDL, is it easy, or is it not, is it step forward, or just another complication in achieving the final goal?
... programming code. And that is not a very transferable skill. Therefore it is concluded that although majority of designers will benefit from the usage of VHDL programming, some may encounter certain difficulties and ought to use less advanced techniques. Introduction VHDL (Very ...
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What are free radicals?
... involved in chemical reactions and are the substance that bonds atoms together to form molecules. Electrons surround, or "orbit" an atom in one or more shells. The innermost shell is full when it has two electrons. When the first shell ...
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What increase's the rate of reaction between hydrochloric acid and magnesium ribbon?
... to predict the rate of a reaction. The Collision Theory is based on the idea that for a chemical reaction to take place, it is necessary for the reacting particles to collide with each other with enough energy to break ...
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What is a quantum computer?
... exponential increase so if n qubits were used to make a computer then 2n calculations can be done at once. Physicists are excited by the prospect because this means that unsolved problems and calculation could be solved by a quantum ...
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When you were in Reception class,everyone got taught that the world was made of stuff. People were made of skin,bones, teeth, eyes and lots of other stuff. In year 5 we found out thateverything was made up of molecules. There was Water molecules, ai...
... on their way to the other side of the universe! A trillion particles, which are so small they can pass through a nucleus without even changing direction! In fact, they can travel through the earth, and the stars virtually unchanged! What ...
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X-ray Photoelectron Spectroscopy.
... ranges from 10-1 to 100 monolayer for XPS. XPS is more sensitive to core levels than to valence-band electrons, (Ibach, H. & Roy, D., 1977, p10). Binding energies The core electron of an element has a unique binding energy, which acts as ...