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Dark Matter Cosmology and Astrophysics 被引量:8
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2019年第4期999-1050,共52页
Hypersphere World-Universe Model (WUM) envisions Matter carried from Universe into World from fourth spatial dimension by Dark Matter Particles (DMPs). Luminous Matter is byproduct of Dark Matter (DM) annihilation. WU... Hypersphere World-Universe Model (WUM) envisions Matter carried from Universe into World from fourth spatial dimension by Dark Matter Particles (DMPs). Luminous Matter is byproduct of Dark Matter (DM) annihilation. WUM introduces Dark Epoch (spanning from Beginning of World for 0.4 billion years) when only DMPs existed, and Luminous Epoch (ever since for 13.8 billion years). Big Bang discussed in standard cosmological model is, in our view, transition from Dark Epoch to Luminous Epoch due to Rotational Fission of Overspinning DM Supercluster’s Cores and annihilation of DMPs. WUM solves a number of physical problems in contemporary Cosmology and Astrophysics through DMPs and their interactions: Angular Momentum problem in birth and subsequent evolution of Galaxies and Extrasolar systems—how do they obtain it;Fermi Bubbles—two large structures in gamma-rays and X-rays above and below Galactic center;Mysterious Star KIC 8462852 with irregular dimmings;Coronal Heating problem in solar physics—temperature of Sun’s corona exceeding that of photosphere by millions of degrees;Cores of Sun and Earth rotating faster than their surfaces;Diversity of Gravitationally-Rounded Objects in Solar system and their Internal Heat;Lightning Initiation problem—electric fields observed inside thunderstorms are not sufficient to initiate sparks;Terrestrial Gamma-Ray Flashes—bursts of high energy X-rays and gamma rays emanating from Earth. Model makes predictions pertaining to Masses of DMPs, proposes New Types of their Interactions. WUM reveals Inter-Connectivity of Primary Cosmological Parameters and calculates their values, which are in good agreement with the latest results of their measurements. 展开更多
关键词 Hypersphere World-Universe Model law of conservation of angular momentum DARK EPOCH Rotational Fission Luminous EPOCH Multiworld DARK MATTER Particles Macroobject Shell Model DARK MATTER Core Medium of the World Mysterious Star KIC 8462852 DARK MATTER Fermi Bubbles Solar CORONA Geocorona Planetary CORONA Galactic Wind Solar Wind High-Energy Atmospheric Physics Lightning Initiation Problem Terrestrial GAMMA-RAY Flashes GAMMA-RAY BURSTS Gravitational BURSTS Ball Lightning
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Solar System. Angular Momentum. New Physics 被引量:7
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2019年第1期112-139,共28页
The most widely accepted model of Solar System formation, known as the Nebular hypothesis, does not solve the Angular Momentum problem—why is the orbital momentum of Jupiter larger than rotational momentum of the Sun... The most widely accepted model of Solar System formation, known as the Nebular hypothesis, does not solve the Angular Momentum problem—why is the orbital momentum of Jupiter larger than rotational momentum of the Sun? The present manuscript introduces a Rotational Fission model of creation and evolution of Macrostructures of the World (Superclusters, Galaxies, Extrasolar Systems), based on Overspinning Cores of the World’s Macroobjects, and the Law of Conservation of Angular Momentum. The Hypersphere World-Universe model is the only cosmological model in existence that is consistent with this Fundamental Law. 展开更多
关键词 Hypersphere World-Universe Model Medium of the World Fifth Fundamental Force DARK MATTER Particles Macroobjects Structure Rotational Fission law of conservation of angular momentum DARK EPOCH Light EPOCH DARK MATTER Reactor SOLAR CORONA GEOCORONA Planetary CORONA SOLAR Wind
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Decisive Role of Dark Matter in Cosmology 被引量:5
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2022年第1期115-142,共28页
Hypersphere World-Universe Model (WUM) is an alternative to the prevailing Big Bang Model (BBM). WUM and BBM are principally different Models: 1) Instead of the Initial Singularity with the infinite energy density and... Hypersphere World-Universe Model (WUM) is an alternative to the prevailing Big Bang Model (BBM). WUM and BBM are principally different Models: 1) Instead of the Initial Singularity with the infinite energy density and the extremely rapid expansion of the space (Inflation) in BBM;in WUM, there was a Fluctuation (4D Nucleus of the World with an extrapolated radius equals to a basic unit of size <i>a</i>) in the Eternal Universe with a finite extrapolated energy density (four orders of magnitude less than the nuclear density) and a finite expansion of the Nucleus in its fourth spatial dimension with speed <i>c</i> that is the gravitodynamic constant;2) Instead of the Infinite Homogeneous and Isotropic Universe around the Initial Singularity in BBM;in WUM, the 3D Finite Boundless World (the Hypersphere of the 4D Nucleus) presents a Patchwork Quilt of different Luminous Superclusters (&gsim;10<sup>3</sup>), which emerged in various places of the World at different Cosmological times. The Medium of the World is Homogeneous and Isotropic. The distribution of Macroobjects in the World is spatially Inhomogeneous and Anisotropic and temporally Non-simultaneous. The Absolute Age of the entire World (determined by the parameters of the Medium) is 14.22 Gyr. 展开更多
关键词 Hypersphere World-Universe Model law of conservation of angular momentum Dark Epoch Volcanic Rotational Fission Luminous Epoch Dark Matter Particles Macroobject Shell Model Medium of the World
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用指标表示法推导电磁场的守恒律
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作者 李照宇 《大学物理》 2023年第9期16-19,共4页
本文利用指标表示法推导了电磁场的能量、动量和角动量守恒定律,其特点是:物理思想清晰,推导目的明确;物理量引入自然、意义明了;数学运算方便,难度相对较低.
关键词 指标法 电磁场 能量守恒律 动量守恒律 角动量守恒律
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电磁场角动量守恒定律的四维协变形式
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作者 李照宇 《高师理科学刊》 2024年第2期56-58,63,共4页
导出了电磁场角动量守恒定律的四维协变形式,并讨论了其物理意义:该形式是一个四维二阶张量方程,一共有6个非零独立分量,其中3个分量给出电磁场的角动量守恒定律,另外3个分量同时给出电磁场的能量和动量守恒定律.
关键词 电磁场 角动量守恒律 四维协变形式 相对论
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力学中的动量守恒定律和角动量守恒定律 被引量:4
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作者 朱青 《科技情报开发与经济》 2006年第7期268-269,共2页
动量守恒定律、角动量守恒定律是物理学的基本规律。在中学和大学的物理教学中,它们都是教学的重点。为了使大学物理教学与中学物理更好地衔接,对力学中动量守恒定律与角动量守恒定律的建立及适用范围进行了探讨,目的是使学生清楚这些... 动量守恒定律、角动量守恒定律是物理学的基本规律。在中学和大学的物理教学中,它们都是教学的重点。为了使大学物理教学与中学物理更好地衔接,对力学中动量守恒定律与角动量守恒定律的建立及适用范围进行了探讨,目的是使学生清楚这些定律的实验基础,加深对守恒定律的理解,掌握各定律的适用范围。 展开更多
关键词 大学物理 中学物理 动量守恒定律 角动量守恒定律
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Hypersphere World-Universe Model: Basic Ideas 被引量:4
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2020年第4期710-752,共43页
Hypersphere World-Universe Model (WUM) envisions Matter carried from the Universe into the World from the fourth spatial dimension by Dark Matter Particles (DMPs). Luminous Matter is a byproduct of Dark Matter (DM) se... Hypersphere World-Universe Model (WUM) envisions Matter carried from the Universe into the World from the fourth spatial dimension by Dark Matter Particles (DMPs). Luminous Matter is a byproduct of Dark Matter (DM) self-annihilation. WUM introduces Dark Epoch (spanning from the Beginning of the World for 0.45 billion years) and Luminous Epoch (ever since for 13.77 billion years). Big Bang discussed in Standard Cosmology (SC) is, in our view, transition from Dark Epoch to Luminous Epoch due to Rotational Fission of Overspinning DM Supercluster’s Cores and self-annihilation of DMPs. WUM solves a number of physical problems in SC and Astrophysics through DMPs and their interactions: Angular Momentum problem in birth and subsequent evolution of Galaxies and Extrasolar systems;Fermi Bubbles—two large structures in gamma-rays and X-rays above and below Galactic center;Coronal Heating problem in solar physics—temperature of Sun’s corona exceeding that of photosphere by millions of degrees;Cores of Sun and Earth rotating faster than their surfaces;Diversity of Gravitationally-Rounded objects in Solar system and their Internal Heating. Model makes predictions pertaining to Rest Energies of DMPs, proposes New Type of their Interactions. WUM reveals Inter-Connectivity of Primary Cosmological Parameters and calculates their values, which are in good agreement with the latest results of their measurements. 展开更多
关键词 Hypersphere World-Universe Model law of conservation of angular momentum Dark Epoch Rotational Fission Luminous Epoch Dark Matter Particles Self-Annihilation Macroobject Shell Model Dark Matter Core Medium of the World Dark Matter Fermi Bubbles Solar Corona GEOCORONA Planetary Corona Galactic Wind Solar Wind Gamma-Ray Bursts Gravitational Bursts Fast Radio Bursts Dark Matter Reactor Lightning Initiation Problem Terrestrial Gamma-Ray Flashes Missing Baryon Problem Energy-Varying Photons
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浅析大学物理中力学守恒定律的应用 被引量:2
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作者 刘丙国 刘笃举 +1 位作者 巩克燕 贺春元 《科技信息》 2011年第3期I0169-I0169,I0420,共2页
通过三个具体的例子,分析了满足大学物理中力学守恒定律的条件,总结出了利用力学守恒定律求解问题的一般步骤。
关键词 动量守恒定律 机械能守恒定律 角动量守恒定律
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Hypersphere World-Universe Model 被引量:3
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第2期915-941,共27页
Dirac’s themes were the unity and beauty of Nature. He identified three revolutions in modern physics: Relativity, Quantum Mechanics and Cosmology. In his opinion: “<i>The new cosmology will probably turn out ... Dirac’s themes were the unity and beauty of Nature. He identified three revolutions in modern physics: Relativity, Quantum Mechanics and Cosmology. In his opinion: “<i>The new cosmology will probably turn out to be philosophically even more revolutionary than relativity or the quantum theory, perhaps looking forward to the current bonanza in cosmology, where precise observations on some of the most distant objects in the universe are shedding light on the nature of reality, on the nature of matter and on the most advanced quantum theories</i>” [Farmelo, G. (2009) The Strangest Man. The Hidden Life of Paul Dirac, Mystic of the Atom. Basic Books, Britain, 661 p]. In 1937, Paul Dirac proposed the Large Number Hypothesis and the Hypothesis of the variable gravitational “constant”;and later added the notion of continuous creation of Matter in the World. The developed Hypersphere World-Universe Model (WUM) follows these ideas, albeit introducing a different mechanism of matter creation. In this paper, we show that WUM is a natural continuation of Classical Physics and it can already serve as a basis for a New Cosmology proposed by Paul Dirac. 展开更多
关键词 Hypersphere World-Universe Model law of conservation of angular momentum Dark Epoch Rotational Fission Luminous Epoch Dark Matter Particles Macroobject Shell Model Dark Matter Core Medium of the World Dark Matter Fermi Bubbles Galactic Wind Solar Wind Gravitational Bursts Intergalactic Plasma Macroobjects Supremacy of Matter Gravitomagnetic parameter Impedance Energy Density Gravitational Parameter Hubble’s Parameter Temperature of Microwave Background Radiation Inter-Connectivity of Primary Cosmological Parameters Dark Matter Reactor
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From the Beginning of the World to the Beginning of Life on Earth 被引量:3
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第4期1503-1523,共21页
Hypersphere World-Universe Model (WUM) is, in fact, a Paradigm Shift in Cosmology [1]. In this paper, we provide seven Pillars of WUM: Medium of the World;Inter-Connectivity of Primary Cosmological Parameters;Creation... Hypersphere World-Universe Model (WUM) is, in fact, a Paradigm Shift in Cosmology [1]. In this paper, we provide seven Pillars of WUM: Medium of the World;Inter-Connectivity of Primary Cosmological Parameters;Creation of Matter;Multicomponent Dark Matter;Macroobjects;Volcanic Rotational Fission;Dark Matter Reactors. We describe the evolution of the World from the Beginning up to the birth of the Solar System and discuss the condition of the Early Earth before the beginning of life on it. 展开更多
关键词 Hypersphere World-Universe Model law of conservation of angular momentum Dark Epoch Volcanic Rotational Fission Luminous Epoch Dark Matter Particles Macroobject Shell Model Dark Matter Core Medium of the World Dark Matter Fermi Bubbles Galactic Wind Solar Wind Intergalactic Plasma Macroobjects Gravitomagnetic Parameter Impedance Energy Density Gravitational Parameter Hubble’s Parameter Temperature of Microwave Background Radiation Inter-Connectivity of Primary Cosmological Parameters Dark Matter Reactor Early Earth Formation of Earth Origin of Moon Continental Crust of Earth Earth’s Atmosphere and Oceans Origin of Life
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Hypersphere World-Universe Model: Centre of Our Galaxy 被引量:2
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2022年第1期25-55,共31页
In 1937, Paul Dirac proposed: the Large Number Hypothesis and the Hypothesis of the variable gravitational “constant”;and later added the notion of continuous creation of Matter in the World. The developed Hypersphe... In 1937, Paul Dirac proposed: the Large Number Hypothesis and the Hypothesis of the variable gravitational “constant”;and later added the notion of continuous creation of Matter in the World. The developed Hypersphere World-Universe Model (WUM) follows these ideas, albeit introducing a different mechanism of matter creation. In this paper, we show that WUM is a natural continuation of Classical Physics, and it can already serve as a basis for a New Cosmology proposed by Paul Dirac. In 2013, WUM predicted the values of the following Cosmological parameters: gravitational, concentration of intergalactic plasma, and the minimum energy of photons, which were experimentally confirmed in 2015-2018. “<i>The Discovery of a Supermassive Compact Object at the Centre of Our Galaxy</i>” (Nobel Prize in Physics 2020) made by Prof. R. Genzel and A. Ghez is a confirmation of one of the most important predictions of WUM in 2013: “<i>Macroobjects of the World have cores made up of the discussed DM particles. Other particles, including DM and baryonic matter, form shells surrounding the cores</i>”. 展开更多
关键词 law of conservation of angular momentum Dark Epoch Rotational Fission Luminous Epoch Multicomponent Dark Matter Milky Way Centre Medium of the World Dark Matter Reactors
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RENEWAL OF BASIC LAWS AND PRINCIPLES FOR POLAR CONTINUUM THEORIES (X) -MASTER BALANCE LAW 被引量:3
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作者 戴天民 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2006年第2期167-174,共8页
Through a comparison between the expressions of master balance laws and the conservation laws derived by Noether's theorem, a unified master balance law and six physically possible balance equations for micropolar co... Through a comparison between the expressions of master balance laws and the conservation laws derived by Noether's theorem, a unified master balance law and six physically possible balance equations for micropolar continuum mechanics are naturally deduced. Among them, by extending the well-known conventional concept of energymomentum tensor, the rather general conservation laws and balance equations named after energy-momentum, energy-angular momentum and energy-energy are obtained. It is clear that the forms of the physical field quantities in the master balance law for the last three cases could not be assumed directly by perceiving through the intuition. Finally, some existing results are reduced immediately as special cases. 展开更多
关键词 unified master balance law physical field quantities conservation laws ENERGY-momentum energy-angular momentum energy-energy
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原子汤姆孙模型中α粒子散射角的计算 被引量:2
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作者 赵亮 《大学物理》 北大核心 2009年第5期56-59,共4页
利用原子的汤姆孙模型和经典力学的方法,具体计算了α粒子穿过原子时产生的散射角.最后从理论值与卢瑟福散射实验结果的矛盾否定汤姆孙模型.
关键词 汤姆孙模型 散射角 能量守恒定律 角动量守恒定律
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Hypersphere World-Universe Model: Evolution of the World 被引量:2
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第2期508-530,共23页
The main objective of this paper is to discuss the Evolution of a 3D Finite World (that is a Hypersphere of a 4D Nucleus of the World) from the Beginning up to the present Epoch in frames of World-Universe Model (WUM)... The main objective of this paper is to discuss the Evolution of a 3D Finite World (that is a Hypersphere of a 4D Nucleus of the World) from the Beginning up to the present Epoch in frames of World-Universe Model (WUM). WUM is the only cosmological model in existence that is consistent with the Law of Conservation of Angular Momentum. To be consistent with this Fundamental Law, WUM introduces Dark Epoch (spanning from the Beginning of the World for 0.45 billion years) when only Dark Matter (DM) Macroobjects (MOs) existed, and Luminous Epoch (ever since for 13.77 billion years) when Luminous MOs emerged due to Rotational Fission of Overspinning DM Superclusters’ Cores and self-annihilation of Dark Matter Particles (DMPs). WUM envisions that DM is created by the Universe in the 4D Nucleus of the World. Dark Matter Particles (DMPs) carry new DM into the 3D Hypersphere World. Luminous Matter is a byproduct of DMPs self-annihilation. By analogy with 3D ball, which has two-dimensional sphere surface (that has surface energy), we can imagine that the 3D Hypersphere World has a “Surface Energy” of the 4D Nucleus. WUM solves a number of physical problems in contemporary Cosmology and Astrophysics through DMPs and their interactions: <b>Angular Momentum problem</b> in birth and subsequent evolution of Galaxies and Extrasolar systems—how do they obtain it;<b>Fermi Bubbles</b>—two large structures in gamma-rays and X-rays above and below Galactic center;<b>Missing Baryon problem</b> related to the fact that the observed amount of baryonic matter did not match theoretical predictions. WUM reveals <b>Inter-Connectivity of Primary Cosmological Parameters</b> and calculates their values, which are in good agreement with the latest results of their measurements. In 2013, WUM predicted the values of the following Cosmological parameters: gravitational, concentration of intergalactic plasma, and the minimum energy of photons, which were experimentally confirmed in 2015-2018. “<i>The Discovery of a Supermassive Compact Ob 展开更多
关键词 Hypersphere World-Universe Model law of conservation of angular momentum Dark Epoch Rotational Fission Luminous Epoch Dark Matter Particles Macroobject Shell Model Dark Matter Core Medium of the World Dark Matter Fermi Bubbles Galactic Wind Solar Wind Gamma-Ray Bursts Gravitational Bursts Intergalactic Plasma Cosmological Time Solar Time Macroobjects Supremacy of Matter Gravitomagnetic Parameter Impedance Energy Density Gravitational Parameter Hubble’s Parameter Temperature of Microwave Background Radiation Inter-Connectivity of Primary Cosmological Parameters Dark Matter Reactor
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Solar System. Angular Momentum. Dark Matter Reactors 被引量:2
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第4期1353-1372,共20页
The developed Hypersphere World-Universe Model (WUM) is consistent with all Concepts of the World [1]. In WUM, we postulate the principal role of Angular Momentum and Dark Matter in Cosmological theories of the World.... The developed Hypersphere World-Universe Model (WUM) is consistent with all Concepts of the World [1]. In WUM, we postulate the principal role of Angular Momentum and Dark Matter in Cosmological theories of the World. The most widely accepted model of Solar System formation, known as the Nebular hypothesis, does not solve the Angular Momentum problem—why is the orbital momentum of Jupiter larger than rotational momentum of the Sun? WUM is the only cosmological model in existence that is consistent with this Fundamental Law. The Nebular hypothesis does not solve Internal Heating and Diversity problems for all Planets and Moons in Solar system—why the actual mean surface temperature of them is higher than their effective temperature calculated based on the Sun’s heat for them and how could each one be so different if all of them came from the same nebula? The proposed concept of Dark Matter Reactors in Cores of all gravitationally-rounded Macroobjects successfully resolves these problems. 展开更多
关键词 Hypersphere World-Universe Model Medium of the World Dark Matter Particles Macroobjects Structure Rotational Fission law of conservation of angular momentum Dark Epoch Light Epoch Solar Corona Solar Wind Dark Matter Reactor
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费曼圆盘佯谬及角动量守恒 被引量:2
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作者 田晓岑 任翠娥 《大学物理》 北大核心 1996年第6期17-20,共4页
简述电磁场中角动量守恒定律和费曼圆盘佯谬,对描述费曼圆盘的模型进行了讨论,最后对静场远区的角动量作了定量计算.
关键词 静电磁场 角动量 守恒定律 费曼圆盘佯谬
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World-Universe Model—Alternative to Big Bang Model 被引量:1
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作者 Vladimir S. Netchitailo 《Journal of High Energy Physics, Gravitation and Cosmology》 2020年第1期133-158,共26页
This manuscript provides a comparison of the Hypersphere World-Universe Model (WUM) with the prevailing Big Bang Model (BBM) of the Standard Cosmology. The performed analysis of BBM shows that the Four Pillars of the ... This manuscript provides a comparison of the Hypersphere World-Universe Model (WUM) with the prevailing Big Bang Model (BBM) of the Standard Cosmology. The performed analysis of BBM shows that the Four Pillars of the Standard Cosmology are model-dependent and not strong enough to support the model. The angular momentum problem is one of the most critical problems in BBM. Standard Cosmology cannot explain how Galaxies and Extra Solar systems obtained their substantial orbital and rotational angular momenta, and why the orbital momentum of Jupiter is considerably larger than the rotational momentum of the Sun. WUM is the only cosmological model in existence that is consistent with the Law of Conservation of Angular Momentum. To be consistent with this Fundamental Law, WUM discusses in detail the Beginning of the World. The Model introduces Dark Epoch (spanning from the Beginning of the World for 0.4 billion years) when only Dark Matter Particles (DMPs) existed, and Luminous Epoch (ever since for 13.8 billion years). Big Bang discussed in Standard Cosmology is, in our view, transition from Dark Epoch to Luminous Epoch due to Rotational Fission of Overspinning Dark Matter (DM) Supercluster’s Cores. WUM envisions Matter carried from the Universe into the World from the fourth spatial dimension by DMPs. Ordinary Matter is a byproduct of DM annihilation. WUM solves a number of physical problems in contemporary Cosmology and Astrophysics through DMPs and their interactions: Angular Momentum problem in birth and subsequent evolution of Galaxies and Extrasolar systems—how do they obtain it;Fermi Bubbles—two large structures in gamma-rays and X-rays above and below Galactic center;Diversity of Gravitationally-Rounded Objects in Solar system;some problems in Solar and Geophysics [1]. WUM reveals Inter-Connectivity of Primary Cosmological Parameters and calculates their values, which are in good agreement with the latest results of their measurements. 展开更多
关键词 Big Bang MODEL Four Pillars of Standard Cosmology angular momentum Problem Black Holes Hypersphere World-Universe MODEL Multicomponent DARK MATTER Macroobjects Structure law of conservation of angular momentum Medium of the World Inter-Connectivity of Primary Cosmological Parameters The Beginning of the World DARK EPOCH Rotational Fission Luminous EPOCH Macroobject Shell MODEL DARK MATTER Core Gravitational Burst Intergalactic Plasma Microwave Background Radiation Far-Infrared Background Radiation Emergent Phenomena CODATA
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探究转动惯量影响因素和角动量守恒的演示装置
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作者 何佳蕊 冯志芳 +2 位作者 杨雯雁 张冰鑫 程智博 《科技创新导报》 2022年第23期22-26,235,共6页
角动量是大学物理课程中非常重要的物理量,角动量守恒定律也是自然界的普遍规律,在大学物理实验课程中有着较为重要的地位。基于对转动惯量概念、角动量概念、角动量定理、角动量守恒定律的研究、分析,本文设计了一种新型的、可以同时... 角动量是大学物理课程中非常重要的物理量,角动量守恒定律也是自然界的普遍规律,在大学物理实验课程中有着较为重要的地位。基于对转动惯量概念、角动量概念、角动量定理、角动量守恒定律的研究、分析,本文设计了一种新型的、可以同时探究转动惯量影响因素和演示角动量守恒的物理实验装置。该装置采用的是上、下两层的设计理念,通过改变滑块质量及滑块质量分布相对转轴的距离,可以探究转动惯量的影响因素,同时,通过移动滑块改变上、下两层支杆的转动惯量,可以验证角动量守恒定律。该装置配有遮光片和光电门等器件,可以实现由定性到定量的演示,其优点是结构简单、现象直观、便于操作,有很好的实验价值。 展开更多
关键词 角动量 转动惯量 演示装置 角动量守恒定律
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重建极性连续统理论的基本定律和原理(Ⅹ)——主均衡定律 被引量:2
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作者 戴天民 《应用数学和力学》 CSCD 北大核心 2006年第2期151-158,共8页
通过对诸主均衡定律和应用Noether定理得出的守恒定律进行比较,自然地导出微极连续统力学的1个统一的主均衡定律和6个物理上可能的均衡方程.其中,通过扩展众所周知和惯用的能量动量张量的概念,得到相当一般的定名为能量_动量的、能量_... 通过对诸主均衡定律和应用Noether定理得出的守恒定律进行比较,自然地导出微极连续统力学的1个统一的主均衡定律和6个物理上可能的均衡方程.其中,通过扩展众所周知和惯用的能量动量张量的概念,得到相当一般的定名为能量_动量的、能量_角动量的和能量_能量的守恒定律和均衡方程.显然,在这后3种情况下的主均衡定律中,物理场量是难以凭借直觉假定出来的.最后,作为特殊情形,直接推演出若干现有的结果. 展开更多
关键词 统一的主均衡定律 物理场量 守恒定律 能量-动量 能量-角动量 能量-能量
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物理学中的守恒定律及其地位
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作者 杨昌权 《黄冈师范学院学报》 2000年第3期64-65,共2页
从时间的均匀性可推得机械能守恒定律 ,从空间的均匀性和空间的各向同性可分别推出动量守恒定律和角动量守恒定律 .如果没有时空对称性 ,就根本谈不上物理学 .因此 ,守恒定律是物理学的基石 。
关键词 守恒定律 机械能守恒 动量守恒 角动量守恒 电荷守恒 物理学
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