R≫λ(天线距离远大于波长)。在R<λ的情况下,公式会给出物理上不可能的结果(即,接收功率大于发射功率),其违背了能量守恒定理(Law of Conservation of Energy)。 收发天线出于无遮挡的自由空间中,即不存在多路效应(Multipath Effect)。 接收功率Pr为接收端可用功率(Available Power)。功率在通过电线和连接器时存在...
conservation of energy n.[物]f mass n.[物]质能量守恒定律 conservation of functional equation 泛函方程的守恒 equation of mass conservation 质量守恒定律方程 mass conservation equation 质量守恒方程 particle conservation equation 粒子数守恒方程 energy equation 能量方程 law of conservation of mass ...
The energy equation is an expression of the first law of thermodynamics or the law of conservation of energy. According to the first law of thermodynamics, the externally applied work to a system is equal to the sum of dissipation energy and Helmholtz free energy of the system. However, most...
Lenz’s law can be considered as a magnetic corollary to Newton’s third law (Every action has an equal and opposite reaction) and the law of conservation of energy. The change in the magnetic field is an action and the direction of the induced current is the reaction. Lenz’s law equa...
We start by considering the speed of the ejected electrons. Recall the basic equation of the photoelectric effect, which is basically a restatement of the law of conservation of energy. E k = hν −φ We know that the kinetic energy is related to the velocity: E ...
Energy Energy is the stored form of heat and work. The basic concepts applied in fluid mechanics are: • The conservation of energy • That energy is transferred only as heat or work • That energy in a fluid flow system is stored only as internal energy, kinetic energy or potential ...
Fluid Dynamics Modelling of the Impact of Climate Change on Solar Radiation in Nigeria (ECHAM5-GCM) and based majorly on the fundamental principles of Newton's second law, the conservation of mass, the equation of state and the first law of thermodynamics was generated for Nigeria under an enh...
Which equation represents the law of conservation of energy in a closed system? What does K equal in Avogadro's law? Describe how each of the following Gas Laws applies to breathing in humans. a. Boyle's Law b. Charles Law c. Dalton's Law of Partial Pressures ...
Equation 1.6 or Faraday’s law explains that a time-varying magnetic field would induce a time-varying electric field. Finally, equation 1.7 or Ampere’s circuit law describes the conservation of charge in terms of magnetic field, current flow, and variable electric field. Those laws had been ...
Equations used in fluid mechanics - like Bernoulli, conservation of energy, conservation of mass, pressure, Navier-Stokes, ideal gas law, Euler equations, Laplace equations, Darcy-Weisbach Equation and more. Fluid Flow - Equation of Continuity The Equation of Continuity is a statement of mass co...