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 ...
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...
The idea of entropy provides amathematicalway to encode the intuitive notion of which processes are impossible, even though they would not violate the fundamental law ofconservation of energy. For example, a block of ice placed on a hot stove surely melts, while the stove grows cooler. Such ...
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 君,已阅读到文档的结尾了呢~~ ...
A) When you do work on something, you always give it energy. B) Energy is the ability to do work. C) Fundamentally, energy and work are different forms of the same thing Explain the law of conservation of energy. Which of the following is being described by the statement: The sum of...
Then in report dated 9 October 2009, Dr Drake did another mistake by applying Law of Conservation of Energy incorrectly which is taught in eleventh class, to cover up his previous mistake. Why Galileo like punishment is being given to Ajay Sharma in modern era? 展开 关键词:...
Law of Conservation of Energy Lesson Summary Frequently Asked Questions What is an example of motion energy? Motion energy can appear as kinetic or potential energy. Kinetic is related to an object moving (e.g.: car traveling), and potential is related to stored energy (e.g.: an object ...
aFigure 1 illustrates energy flows into and out of a thermodynamic[translate] athe pressure remains constant. Gases are highly superheated vapors.[translate] aany system, open or closed, there is an energy balance as[translate] aconservation of energy. The following form of the first law equati...
energy balance equationmass and energynatural phenomenamatter and energySummary This chapter contains sections titled: Introduction The Law of Conservation of Mass and Energy Avalanche Theory Aims of Modeling Natural Phenomena Simultaneous Characterization of Matter and Energy A Discussion Conclusions...