ЧТО ОЗНАЧАЕТ СЛОВО POYNTING THEOREM
Теорема Пойнтинга
В электродинамике теорема Пойнтинга представляет собой утверждение сохранения энергии для электромагнитного поля в виде уравнения в частных производных, которое получил британский физик Джон Генри Пойнтинг. Теорема Пойнтинга аналогична теореме о рабочей энергии в классической механике и математически похожа на уравнение неразрывности, поскольку она связывает энергию, накопленную в электромагнитном поле, с работой по распределению заряда через поток энергии.
Значение слова Poynting theorem в словаре английский языка
Определение теоремы Пойнтинга в словаре - это теорема о том, что скорость потока электромагнитной энергии по единице площади равна вектору Пойнтинга, т. Е. Поперечному произведению напряженности электрического и магнитного полей.
КНИГИ НА АНГЛИЙСКИЙ ЯЗЫКЕ, ИМЕЮЩЕЕ ОТНОШЕНИЕ К СЛОВУ «POYNTING THEOREM»
Поиск случаев использования слова
Poynting theorem в следующих библиографических источниках. Книги, относящиеся к слову
Poynting theorem, и краткие выдержки из этих книг для получения представления о контексте использования этого слова в литературе на английский языке.
1
An Introduction to Classical Electromagnetic Radiation
The energy density U corresponds to the charge density p, and the Poynting
vector S, which represents a flow of energy, corresponds to the current density J ,
which represents a flow of charge. It should be emphasized that Poynting's
theorem ...
4.9 The complex Poynting theorem An equation having a striking resemblance to
Poynting's theorem can be obtained by direct manipulation of the phasor-domain
Maxwell equations. The result, although certainly satisfied by the phasor fields, ...
Edward J. Rothwell, Michael J. Cloud,
2001
3
Microwave Antenna Theory and Design
It should be noted that the equation of continuity determines the charge density
directly from the current. 3-6. Poynting's Theorem. — Discussions of the energy
relations in an electromagnetic field are usually based on Poynting's theorem.
4
Electro magnetic Waves and Transmission Lines
The resulting theorem is the most fundamental relationships of the
electromagnetic theory, which is known as Poynting theorem. 10.2 Poynting
Vector and Poynting Theorem By the means of electromagnetic (EM) waves, an
energy can be ...
U.A.Bakshi, A.V.Bakshi,
2009
The resulting theorem is the most fundamental relationships of the
electromagnetic theory which is known as Poynting theorem. 10.2 Poynting
Vector and Poynting Theorem By the means of electromagnetic (EM) waves, an
energy can be ...
U.A.Bakshi, A.V.Bakshi,
2010
6
Electromagnetic Waves and Radiating Systems
The energy stored in an electric field and magnetic field is transmitted at a certain
rate of energy flow which can be calculated with the help of Poynting theorem. As
we know E and H are basic fields. E is electric field expressed in V/m; while H ...
U.A.Bakshi, A.V.Bakshi,
2009
7
Engineering Electromagnetics
22. A transmitter (generator, transmitting antenna, etc.) has a positive Poynting
vector TIP. 23. If a generator also has an internal resistance that dissipates power
, how would you take this into account in the expression of Poynting's theorem?
8
Fundamentals of Electromagnetics with MATLAB
An important derivation that describes the magnitude and direction of the flow of
electromagnetic power will employ vector identities and the differential form of
Maxwell's equations. Poynting's Theorem A frequently encountered problem in ...
Karl Erik Lonngren, Sava Vasilev Savov, Randy J. Jost,
2007
9
Electromagnetic Engineering
8.9 Poynting Vector and Poynting Theorem By the means of electromagnetic (EM
) waves, an energy can be transported from transmitter to receiver. The energy
stored in an electric field and magnetic field is transmitted at a certain rate of ...
A.V.Bakshi U.A.Bakshi,
2009
10
RF/Microwave Interaction with Biological Tissues
We should now have a better understanding of the second sentence of this
section: In the time domain, Poynting's theorem expresses an equality between
the spatial variation of EM power and the time variation of EM energy, the sum of
the ...
André Vander Vorst, Arye Rosen, Youji Kotsuka,
2006