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Star Point Energy Center Correction of Star Simulator Based on Polar Coordinates
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作者 WANG Lingyun WANG Xinghua +4 位作者 WANG Bo ZHANG Guoyu SUN Gaofei LIU Shi LI Wenjun 《空间科学学报》 CAS CSCD 北大核心 2016年第3期407-412,共6页
In this paper,various aberrations have been analyzed.Not only the effects of aberration on geometrical center position are taken into account,but also the deviation of displayed star position energy center caused by a... In this paper,various aberrations have been analyzed.Not only the effects of aberration on geometrical center position are taken into account,but also the deviation of displayed star position energy center caused by aberration is analyzed.These two aspects have been taken into comprehensive evaluation and star position correction.The correction method based on polar coordinates is proposed,and cumbersome partition correction and calculated quantity based on two-dimensional coordinates can be simplified.The experimental results show that the correction processing based on polar coordinates is simpler and easier compared with any other correction methods.In addition,the correction results are significantly more accurate. 展开更多
关键词 ABERRATION energy center CORRECTION Polar coordinates
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Interaction between an Accelerated Mass in Straight Motion and a Hidden Energy Reservoir as a Strict Mathematical Consequence of Special Relativity
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作者 Andreas Trupp 《Journal of Modern Physics》 2022年第1期16-33,共18页
A. Einstein and H.A. Lorentz had found that the mass of an accelerated body traveling at relativistic velocity appears to depend on whether the acceleration is performed in the direction of motion or in a transverse d... A. Einstein and H.A. Lorentz had found that the mass of an accelerated body traveling at relativistic velocity appears to depend on whether the acceleration is performed in the direction of motion or in a transverse direction. E.P. Epstein rejected this result in the “Annalen der Physik”;he rather postulated an additional force that turns up when the body is accelerated in the longitudinal direction. It can be shown that the concept of an increased longitudinal mass is based on a simple mathematical error. When correcting this error, it turns out that Epstein’s additional, hidden force is indispensable in order to avoid an inner inconsistency of Special Relativity. It does most of the total work absorbed by the moving object, and is thus responsible for most of the increase in its energy (=mass), given the speed attained is relativistic. In other words: While the total force on the body needed to maintain a constant acceleration <em>a</em><sub>0</sub> is “<span style="white-space:nowrap;">(1-<em>v</em><sup>2</sup>/<em>c</em><sup>2</sup>)<sup>-1</sup><em>m</em><em>a</em><sub>0</sub>=<em>m</em><sub>0</sub>(1-<em>v</em><sup>2</sup>/<em>c</em><sup>2</sup>)<sup>-3/2</sup><em>a</em><sub><em>0</em></sub></span>”, the technical force needed to maintain that acceleration amounts only to “<em>m</em><em>a</em><sub>0</sub>=<em><em>m</em><sub>0</sub>(1 - <em>v</em><sup>2</sup>/<em>c</em><sup>2</sup>)<sup>-1/2</sup><em>a</em><sub><em>0</em></sub></em>”. The total energy of two objects that undergo a symmetrical, elastic head-on collision is therefore not conserved during the collision, thus requiring the involvement of a hidden reservoir of energy. This result is confirmed by calculations that use the concept of momenergy. The phenomenon of an apparent disappearance of energy has been noticed in particle physics already (target-experiment), but its consequences have been ignored. Instead, an explanation has been given (reduced “energy of the center of mass”) which is inconsistent and violates the relativity principle. 展开更多
关键词 Special Relativity Longitudinal Mass Transverse Mass Momenergy Target Experiment energy of the center of Mass Dark energy
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Time-domain nature of group delay
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作者 王建武 冯正和 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第10期36-40,共5页
The characteristic of group delay is analyzed based on an electronic circuit, and its time-domain nature is studied with time-domain simulation and experiment. The time-domain simulations and experimental results show... The characteristic of group delay is analyzed based on an electronic circuit, and its time-domain nature is studied with time-domain simulation and experiment. The time-domain simulations and experimental results show that group delay is the delay of the energy center of the amplitude-modulated pulse, rather than the propagation delay of the electromagnetic field. As group velocity originates from the definition of group delay and group delay is different from the propagation delay, the superluminaiity or negativity of group velocity does not mean the supeduminal or negative propagation of the electromagnetic field. 展开更多
关键词 energy center group delay time domain SUPERLUMINALITY
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Window Air Conditioners Transition and Restriction in Saudi Arabia
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作者 Essam Al Ammar Abdulhakim Bin Dayil 《Journal of Power and Energy Engineering》 2022年第5期1-21,共21页
This paper will provide a proposed solution for saving energy consumption due to residential air conditioners by reducing the window air conditioners type which is the most consumed energy and has a big percent of spr... This paper will provide a proposed solution for saving energy consumption due to residential air conditioners by reducing the window air conditioners type which is the most consumed energy and has a big percent of spreading inside KSA than the split type, also it will discuss some restrictions for trading and manufacturing of air conditioner devices inside KSA besides some restrictions on market and buildings to achieve the objective of reducing the consumption of energy which become a big trend in kingdom vision 2030. The results of this suggesting solution will help the decision-makers to start its plan for execution as it has a big difference between using window type from 2022 till 2030 and if we stop its sales and replace by an efficient one of split AC type in energy consumption in addition to CO<sub>2</sub> emission reduction and decreasing of energy cost, hence our kingdom can save petroleum raw materials and keeping the environment to become clean from pollutants so that these resources are delivered to successive generations correct and clean as we received them from those before us. 展开更多
关键词 Air Conditioners (AC) Terawatt-Hour (TWh) Saudi Standards Metrology and Quality Organization (SASO) energy-Efficiency Ratio (EER) High Efficiency Air Conditioning (HEAC) Carbon Dioxide (CO2) Heating Ventilation and Air Conditioning (HVAC) Saudi Building Code (SBC) Saudi energy Efficiency center (SEEC)
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Dynamics of Particles Around a Regular Black Hole with Nonlinear Electrodynamics
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作者 Abdul Jawad Farhad Ali +1 位作者 Mubasher Jamil Ujjal Debnath 《Communications in Theoretical Physics》 SCIE CAS CSCD 2016年第11期509-516,共8页
We investigate the dynamics of a charged particle being kicked off from its circular orbit around a regular black hole by an incoming massive particle in the presence of magnetic field. The resulting escape velocity, ... We investigate the dynamics of a charged particle being kicked off from its circular orbit around a regular black hole by an incoming massive particle in the presence of magnetic field. The resulting escape velocity, escape energy and the effective potential are analyzed. It is shown that the presence of even a very weak magnetic field helps the charged particles in escaping the gravitational field of the black hole. Moreover the effective force acting on the particle visibly reduces with distance. Thus particle near the black hole will experience higher effective force as compared to when it is far away. 展开更多
关键词 center of mass energy escape velocity ELECTRODYNAMICS regular black hole
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