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So thats a bidirectional pulse where the voltage flows into the antenna, hits the end and bounces back and to for a while, followed by a similar pulse when you disconnect it.Yes that will radiate EM radiation.
Photons and mass are two different phases,
The antenna has inductance capacitance and resistance.In principle it takes "forever" for the voltage and currents to settle.In practice it probably takes a few times the time required for light to travel the length of the antenna.After that, it stops emitting EM radiation- except of course, that arising from the fact that it is (very slightly) warm.
Is there a minimum limit for photon's frequency? Can it be 0?
Quote from: hamdani yusuf on 21/05/2020 06:59:33Is there a minimum limit for photon's frequency? Can it be 0?The em wave/photon is caused by the acceleration of the electrons, if there is no frequency there is no acceleration, hence no energy (E=hf).The leading edge of a pulse (+ve going or -ve going) contains a wide range of frequencies and as @Bored chemist says, will take finite time to build and settle and includes reflections from the far end of the antenna.
The em wave/photon is caused by the acceleration of the electrons, if there is no frequency there is no acceleration, hence no energy (E=hf).
Is it possible to produce 1 microHertz photon? What about 1 nanoHertz? Is there any lower limit?
An atom can emit photons and in QM there is no such thing as an electron acceleration
Quote from: PmbPhy on 22/05/2020 12:16:03An atom can emit photons and in QM there is no such thing as an electron accelerationCan a free electron emit photons?
define "free" but...
A photon is a Riemann Sphere with momentum charges on a circle in the sphere.
momentum charges encoded in the particle?
momentum charges encoded in the particle?That doesn't mean anything.
Very convenient for you, that you can't interpret it. Any idiot can interpret it.