Anti-gravity is the idea of creating a place or object that is free from the force of gravity. It does not refer to the lack of weight under gravity experienced in free fall or orbit‚ or to balancing the force of gravity with some other force‚ such as electromagnetism or aerodynamic lift. Anti-gravity is a recurring concept in science fiction. In Newton’s law of universal gravitation‚ gravity was an external force transmitted by unknown means. Under general relativity‚ anti-gravity is impossible except under
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bang a bubble much smaller than a fraction of an atom forms! It is unimaginably small and unimaginably hot. The temperatures of the universe at that time was 1‚000 billion degrees Within this bubble the four known forces of nature gravity‚ electromagnetism small and weak nuclear forces are combined super force. Gravity suddenly splits from the super force‚ as the universe expands it cools and somehow fuelling the hyper inflation of the universe. This inflation locks in the uniformity of the universe
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HISTORY OF ELECTRICITY Depite what you have learned‚ Benjamin Franklin did not "invent" electricity. In fact‚ electricity did not begin when Benjamin Franklin at when he flew his kite during a thunderstorm or when light bulbs were installed in houses all around the world. The truth is that electricity has always been around because it naturally exists in the world. Lightning‚ for instance‚ is simply a flow of electrons between the ground and the clouds. When you touch something and get a shock
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electricity as fluid or matter that could be condensed. Over the years these jars were used in countless experiments‚ lectures‚ and demonstrations Figure 1: A basic anatomy of a Leyden jar In 1820‚ a Danish physicist Christian Oersted discovered electromagnetism‚ the critical idea needed to develop electrical power and to communicate. Oersted discovered that an electric current creates a magnetic field but he didn’t know if a magnetic field could
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himself and his son Georg. In my research I found out that he wrote an elementary grade geometry book while teaching mathematics at several schools. Ohm began experimental work in a school physics lab after he had learned of the discovery of electromagnetism. Ohm gave a mathematical description of conduction in circuits modeled on Fourier’s study of heat conduction. Ohm’s well understanding of results from the experimental evidence and‚ he was able to suggest laws which really helped explain results
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new avenues of research in areas such as mathematics and philosophy. Physics also makes significant contributions through advances in new technologies that arise from theoretical breakthroughs. For example‚ advances in the understanding of electromagnetism or nuclear physics led directly to the development of new products which have dramatically transformed modern-day society‚ such as television‚ computers‚ domestic appliances‚ and nuclear weapons;[6] advances in thermodynamics led to the development
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bandwidth. The first generation of submarine fiber optic cables carried 280 megabits per second‚ compared with only 2.5 megabits per second through copper cables. Modern optical fibers can carry terabits‚ or millions of megabits‚ per second. Electromagnetism Copper cables are inherently vulnerable to electromagnetic interference. Although fiber optic lines do have metallic components‚ these do not carry the signal‚ so interference is not a problem. Copper cables can also be "tapped" electromagnetically
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haunt her. When she was 38‚ she committed suicide by taking an overdose of sleeping pills. On the other hand‚ we have the example of Karl Friedrich Gauss‚ who is noted for his wide-ranging contributions to physics‚ particularly the study of electromagnetism. Gauss’ mother had been teaching him numbers at the age of two. His father had played calculation games with him. Furthermore‚ Gauss had an educated uncle who taught him sophisticated math at an early age. But how can parents teach their children
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The speed of light (meaning speed of light in vacuum)‚ usually denoted by c‚ is a physical constant important in many areas of physics. Its value is 299‚792‚458 metres per second‚ a figure that is exact since the length of the metre is defined from this constant and the international standard for time.[2] This speed is approximately 186‚282 miles per second. It is the maximum speed at which all energy‚ matter‚ and information in the universe can travel. It is the speed of all massless particles and
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generate dynamical systems proportional to vector fields ÝExA + Bd‚ A 6 BÞ‚ on symplectic domains of Pfaff dimension 4. THIS ARTICLE IS UNDER RE-CONSTRUCTION (10/18/97) (Suggestions are appreciated) INTRODUCTION In this article‚ Classical Electromagnetism will be defined in terms of two topological statements or postulates: the existence of a non-exact global 1-form of potentials‚ A‚ and the existence of a global exact N-1 form of charge currents‚ J. Then‚ the ideas implied by these topological
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