All Questions
4
questions
2
votes
1
answer
251
views
Electric field of dipole antenna
I have seen that the electric field of a dipole antenna detaches and propagates.
For a section of the detached electric field, will the antenna experience recoil if the detached field moves a charged ...
- 156
2
votes
1
answer
105
views
What is the $\frac{1}{r^2} $ term in the electric field of a Hertzian dipole equations?
Taking common equation for the electric field of a Hertzian dipole from Wikipedia:
$${\displaystyle {\begin{aligned}E_{\theta }=i{\frac {\zeta _{0}I\delta \ell }{4\pi }}\left({\frac {k}{r}}-{\frac {i}{...
- 155
0
votes
1
answer
133
views
Dipole oscillators question from Feynman lectures 1.28-29
I am confused by the Feynman lectures Vol1Ch28-29. In all the pictures, there is an electric dipole oscillating vertically. We're assuming the intensity is $E^2$ and that in the far r limit $E$ ...
- 178
1
vote
1
answer
530
views
Spherical wavefronts from a linear electric dipole-antenna
We are given the equation
\begin{equation*}
\vec{E}=\hat{u}_\theta\ p_0 \sin{(\theta)}\frac{k^2}{4\pi\varepsilon_0r}\sin{(kr-\omega t)}~,
\end{equation*}
that describes the far field radiated ...
