Physics "for his services to theoretical physics‚ and especially for his discovery of the law of the photoelectric effect". The latter was pivotal in establishing quantum theory within physics. Near the beginning of his career‚ Einstein thought that Newtonian mechanics was no longer enough to reconcile the laws of classical mechanics with the laws of the electromagnetic field. This led to the development of his special theory of relativity. He realized‚ however‚ that the principle of relativity
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natural science that studies the properties of matter‚ motion‚ force‚ energy‚ space and time. Physics has a number of divisions or sub-categories. Each of these are more focused areas of study. Quantum Physics‚ the study of the quantum world (smaller than an atom). Particle Physics‚ the study of atomic and quantum particles such as electrons‚ protons‚ gluons and neutrinos. Theometical Physics‚ this is the branch of physics which deals in theory. It’s generally at the forefront of physics and thought
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CEIC2001 – Fluid Mechanics Notes Fluid – A substance which is capable of flowing. A fluid is also a substance which has no permanent resistance to change in shape i.e. a solid can resist a shear stress‚ τ by static deflection; a fluid cannot‚ any shear stress applied to a fluid will result in the motion of that fluid for as long as the shear stress is applied. τ=FA Where F = force which is tangent to a surface (shear force)‚ A = area of moving plate in which shear force is applied to. Velocity
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properties can be derived from first principles without recourse to particle or wave mechanics. The approach‚ which is referred to as guided-wave mechanics‚ is based on the kinematics of photon propagation rather than field modes‚ the latter tending to obscure the underlying mechanics. As a consequence‚ concepts that appear as postulates in traditional relativistic quantum mechanics appear in guided-wave mechanics as derived quantities with physically intuitive‚ albeit novel‚ interpretations. This
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LEADS College Defense Road Campus Time Allowed: 3 hours Paper A Max.Marks:50 Attempt any FIVE questions in all‚ selecting at least TWO questions from each section. All questions carry equal marks (Section -1) 1(a) what is meant by divergence of the vector field? Show that ������ �� = ��. �� where V is a vector field in three dimension ? (5) 1b) if ��(��‚ ��‚ ��) = 3�� 2 + 4�� 3 + �� 2 is a scalar field find the �������� ���� �� at point (1‚-2‚ 3)? (5) 2(a) Define elastic and inelastic collisions
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to the resistivity of a metal or semiconductor. The effect is quantum-mechanical in nature and has the following origin: In a disordered electronic system‚ the electron motion is diffusive rather than ballistic. That is‚ an electron does not move along a straight line‚ but experiences a series of random scatterings off impurities which
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things in the universe‚ one must first realize the two pillars of modern physics. First is Einstein’s general relativity and then the concept of quantum mechanics. Relativity provides a framework for understanding the universe at a large scale‚ we are talking about stars‚ galaxies and even larger objects(galaxy clusters‚ black holes even). Quantum mechanics does the opposite‚ provides a framework for the smallest of scales: such as molecules‚ atoms‚
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effect furthered wave particle duality‚ whereby physical systems (i.e.: photons in this case) can display both wave - like and particle like properties and behaviours‚ a concept used by the creators of quantum mechanics. It was explained mathematically by Einstein‚ utilising work in quantum mechanics‚ and was developed by people like Max Planck. The photoelectric effect was not just an immediate discovery with a definite drawn conclusion. It involved many years of research‚ experimentation and debating
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of the discoveries made in physics during the early 20th century. The objective of this course is to provide an understanding of the physical concepts and theories of modern physics. These concepts will aim to make you understand relativity‚ quantum mechanics‚ particle and nuclear physics. Most of these topics are now known as “Non-Classical Physics”. A few brilliant scientists were able to see and put together new theories that changed our understanding of the universe forever. This is not an
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Vinci‚ capillary action 1492: Leonardo de Vinci‚ foresees flying machines 1494: Leonardo de Vinci‚ foresees pendulum clock 1514: Nicolaus Copernicus‚ writes about heliocentric theory but does not yet publish 1515: Leonardo Da Vinci‚ progress in mechanics‚ aerodynamics and hydraulics 1537: Niccolo Tartaglia‚ trajectory of a bullet 1551: Girolamo Cardano‚ studies of falling bodies 1553: Giambattista Benedetti‚ proposed equality of fall rates 1543: Nicolaus Copernicus‚ heliocentric theory published
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