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真空炮研究 被引量:4
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作者 陈家安 雷全新 +2 位作者 江树吼 何晓祺 乔景武 《探测与控制学报》 CSCD 1999年第3期35-41,共7页
真空炮是另一类型的气体炮。本文推导出了其特有的气动力学方程和运动方程,对其性能进行了分析研究,并和 220 m m 真空炮实测情况进行了对比。另外,本文还推导了最佳真空罐容积、最佳口径和最佳试验弹长度的计算方法。
关键词 真空炮 直线准匀加速度 压缩波 稀疏波 扰动
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Revealing the Essence of Electric Permittivity Constant 被引量:2
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作者 Nader Butto 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第1期210-217,共8页
Electric constant believed fundamental constant determined only by physical measurement and cannot be calculated. A new theory about the origin and the essence of the electric constant is proposed and mathematical for... Electric constant believed fundamental constant determined only by physical measurement and cannot be calculated. A new theory about the origin and the essence of the electric constant is proposed and mathematical formulation is described. The vacuum is considered to be superfluid and the electric constant is described as a physical property of the “vacuum”. Hydrodynamics laws are applied to calculate the elasticity and the compressibility of the vacuum to obtain the electric constant value. Thus, electric permittivity is the expression of compressibility of the vacuum which is the capability of the vacuum to permit electric field lines. In conclusion, electric constant is not fundamental constant but observable parameter of the vacuum which depends mainly by the vacuum density. This result could have important consequences in our understanding the origin of physical forces forward Universal Unified Theory based on one constant only, the density of the vacuum. 展开更多
关键词 Electric Constant ELASTICITY vacuum Compressibility vacuum Density
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