Xem 1-20 trên 47 kết quả Gravitational
  • A non-mathematical presentation has necessary limitations; and the reader who wishes to learn how certain exact results follow from Einstein's, or even Newton's, law of gravitation is bound to seek the reasons in a mathematical treatise. But this limitation of range is perhaps less serious than the limitation of intrinsic truth. There is a relativity of truth, as there is a relativity of space.|

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  • The Committee on Gravitational Physics (CGP) was organized by the National Research Council’s (NRC’s) Board on Physics and Astronomy (BPA) as part of the decadal survey Physics in a New Era. The committee’s main charges were (1) to assess the achievements in gravitational physics over the last decade and (2) to identify the most promising opportunities for research in the next decade and describe the resources necessary to realize those opportunities. This report fulfills those charges.

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  • The Committee on Gravitational Physics (CGP) was organized by the National Research Council’s (NRC’s) Board on Physics and Astronomy (BPA) as part of the decadal survey Physics in a New Era. The committee’s main charges were (1) to assess the achievements in gravitational physics over the last decade and (2) to identify the most promising opportunities for research in the next decade and describe the resources necessary to realize those opportunities. This report fulfills those charges....

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  • Gravitation, cosmology, and cosmic-ray physics are often regarded as subfields of astrophysics, as well as physics, because they are practiced by using physical techniques in an astronomical setting. However, this report makes no pretense of surveying all of astrophysics; that enormous task was excellently done by the Astronomy Survey Committee (George B. Field, chairman). Their report, Astronomy and Astrophysics for the 1980's (National Academy Press, Washington, D.C., 1982), has been widely circulated, and its recommendations are currently being considered and implemented.

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  • The author in this work endeavours to solve the greatest scientific problem that has puzzled scientists for the past two hundred years. The question has arisen over and over again, since the discovery of universal gravitation by Sir Isaac Newton, as to what is the physical cause of the attraction of gravitation. “Action at a distance” has long ceased to be recognized as a possible phenomenon, although up to the present, the medium and method of gravitational attraction have not yet been discovered.

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  • (bq) Ebook Physical science: Forces and Motion helps you know How do balanced forces affect the motion of an object? Explain how the Moon’s gravitational pull can be observed on Earth; How is instantaneous speed different from average speed? It is necessary to have a frame of reference to describe motion.

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí y học Molecular Biology cung cấp cho các bạn kiến thức về ngành sinh học đề tài: Gravitation field algorithm and its application in gene cluster...

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  • The author in this work endeavours to solve the greatest scientific problem that has puzzled scientists for the past two hundred years. The question has arisen over and over again, since the discovery of universal gravitation by Sir Isaac Newton, as to what is the physical cause of the attraction of gravitation. “Action at a distance” has long ceased to be recognized as a possible phenomenon, although up to the present, the medium and method of gravitational attraction have not yet been discovered.

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  • THE transport swung past Centaurus on the last leg of her long journey to Sol. There was no flash, no roar as she swept across the darkness of space. As silent as a ghost, as quiet as a puff of moonlight she moved, riding the gravitational fields that spread like tangled, invisible spider webs between the

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  • In this paper, we introduce a vector model to describe gravitational field. The model is based on the assumption that the gravitational mass is Lorentz invariant . We introduce a non- relativistic equation system to describe the gravitational field, then we generalize it to obtain a relativistic equation system . dent

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  • In this paper, based on the vector model for gravitational field we have found a metric tensor of the space –time that in the first order approximate it lead to the Schwarzschild metric tensor in the General Theory of Relativity(GTR).

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  • This textbook offers a succinct and self-contained introduction into general relativity and its main areas of application: compact objects, gravitational waves and cosmology. It has evolved from lecture courses I have taught at the University of Utrecht since 1990. The book is intended for advanced undergraduate and beginning graduate students in physics and astrophysics. The past decades have seen spectacular new developments in our knowledge of cosmology, the physics of compact objects and in high precision gravity experiments.

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  • O Divine Mother Kundalini, the Divine Cosmic Energy that is hidden in men! Thou art Kali, Durga, Adisakti, Rajarajeswari, Tripurasundari, Maha-Lakshmi, Maha-Sarasvati! Thou hast put on all these names and forms. Thou hast manifested as Prana, electricity, force, magnetism, cohesion, gravitation in this universe. This whole universe rests in Thy bosom. Crores of salutations unto thee. O Mother of this world! Lead me on to open the Sushumna Nadi and take Thee along the Chakras to Sahasrara Chakra and to merge myself in Thee and Thy consort, Lord Siva.

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  • The term environment broadly indicates the surroundings of an individual organism or a community of organisms, ranging on up to the entire biosphere, the zone of Earth that is able to sustain life. By surroundings is meant all the nonliving and living materials that play any role in an organism's existence, from soil and air to what the organism feeds on and the organisms that may feed on it. Any other factors acting on the organism, such as heat and light and gravitation, make up its environment as well. In the case of human beings, cultural factors may also be included in the term....

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  • CONTENTS CONTENTS C H A P T E R Introduction 1. Definition. 2. Classifications of Machine Design. 3. General Considerations in Machine Design. 4. General Procedure in Machine Design. 5. Fundamental Units. 6. Derived Units. 7. System of Units. 8. S.I. Units (Inter national System of Units). 9. Metre. 10. Kilogram. 11. Second. 12. Presentation of Units and their values. 13. Rules for S.I. Units. 14. Mass and Weight. 15. Inertia. 16. Laws of Motion. 17. Force. 18. Absolute and Gravitational Units of Force. 19. Moment of a Force. 20. Couple. 21. Mass Density. 22. Mass Moment of Inertia. 23.

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  • THE Universe is governed by Law - one great Law. Its manifestations are multiform, but viewed from the Ultimate there is but one Law. We are familiar with some of its manifestations, but are almost totally ignorant of certain others. Still we are learning a little more every day - the veil is being gradually lifted. We speak learnedly of the Law of Gravitation, but ignore that equally wonderful manifestation, THE LAW OF ATTRACTION IN THE THOUGHT WORLD.

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  • There is no gravitational pull . . . only a push! This hypothesis provides a general model for the mechanics of gravitation. It in no way refutes the observed behavior of gravitation, but merely seeks to explain it. I have based all but a single aspect of this model on established scientific knowledge, and that single aspect is my prediction of an unknown. (So it remains to be proved or disproved.) The team of medieval physicists stepped out of the time machine and began to examine the strange, new device fastened to the window. They had never before seen a...

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  • The present science book "Application of Solar Energy" is edited by Professor R. D. Rugescu in the series on Solar Power and consists of 7 chapters that begin with the proof of the high thermal efficiency of the gravitational draught through concentrated solar heating. It continues with novel technologies of producing organic fuels through solar heating, new types of photovoltaic cells, long term use of thermal solar power plants, the efficiency of thermal storage and applications in Niger of the Solar power.

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  • A power series in x, or in x – a, which is convergent in the interval –1

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  • Energy is defined as the ability to do work. Energy is found in different forms, such as heat, light, motion, and sound. There are many forms of energy, but they can all be put into two categories: kinetic and potential. Electrical, radiant, thermal, motion, and sound energies are kinetic; chemical, stored mechanical, nuclear, and gravitational energies are potential forms of energy

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