8.4. Show that for dipole radiation with = -c- × B , 4nEgcr² the Poynting vector is S= (4x)²ɛo r³ sin² 0 . Give a physical interpretation for this result. In the case of a mobile phone, d'points in the direction of the antenna. In which direction does most of the radiation go?
8.4. Show that for dipole radiation with = -c- × B , 4nEgcr² the Poynting vector is S= (4x)²ɛo r³ sin² 0 . Give a physical interpretation for this result. In the case of a mobile phone, d'points in the direction of the antenna. In which direction does most of the radiation go?
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Transcribed Image Text:8.4. Show that for dipole radiation with
Ë = -c x B, B=;
* Cos e
4TEqcr²
the Poynting vector is
Te sin? 0 .
(4x)²ɛ0 r³
Give a physical interpretation for this result. In the case of a mobile phone, d points
in the direction of the antenna. In which direction does most of the radiation go?
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