Kapanadze and other FE discussion

[kolbacict]

What is the speed of movement of a traveling electromagnetic wave in a waveguide or a coaxial?
Is propagation speed related to frequency?

[stivep]

What is the speed of movement of a traveling electromagnetic wave in a waveguide ?

speed of light within waveguide = <  speed of light in vacuum.(1 ft/ns)
most or waveguides are not in vacuum so speed of light within waveguide < than speed of light in vacuum.(1 ft/ns)
_{Waveguide behaves much like a  passive  High Pass Filter and is basically supporting waves above a certain cut off frequency.
Power loss occurs in the walls of waveguide due to induced current, in order to reduce this loss walls are designed with as much low resistance as possible.}
Tutorials/waveguide-basics-

What is the speed of movement of a traveling electromagnetic wave in a coaxial cable?

In coaxial cable, the speed of an electrical signal is about 2/3 of this, or about 8 in/ns.
https://web.physics.ucsb.edu/~lecturedemonstrations/Composer/Pages/76.18.html
Speed of Electromagnetic Signal Along a Coaxial Cable
https://aapt.scitation.org/doi/10.1119/1.1533966
Speed of waves through coaxial cable experiment
https://www.eevblog.com/forum/projects/speed-of-waves-through-coaxial-cable-experiment/



__________________________________________________
what is  electromagnetic wave (EMW)? <sub>:


Electromagnetic waves are created by the vibration of an electric charge.
This vibration creates a wave which has both an electric and a magnetic component. vibrating perpendicularly to the direction of propagation,
Both electric and a magnetic component are at 90 degrees to each other.
An electromagnetic wave (EMW) transports its energy through a vacuum at a speed of c=3.00 x 108 m/s
EMW doesn't need any medium but if there is a medium than  "speed" of electromagnetic wave  depends from medium like: air, brick wall, plastic etc.
When EMW leaves particular medium e.g brick  it regains to particular speed of light at that another medium e.g air, and regains speed again 
to the "absolute" speed of light in vacuum if it goes to vacuum.</sub>
__________________________________________________
What is speed of EMW?:


I'll try for you simple analogy.
in classical mechanics:
When you turn on the water pressure  on one side the pressure wave passes rather fast to the end, but the  water itself takes much longer."
in quantum mechanics:
Phase velocity of EMW( electromagnetic wave) can be compared to pressure wave -coming from water pressure
Phase velocity  is _(defines) the speed at which waves oscillating at a particular frequency propagates.
_{note:
The electric field and magnetic field of an electromagnetic wave are perpendicular (at right angles) to each other.
They are also perpendicular to the direction of the EM wave. EM waves travel with a constant velocity of 3.00 x 108 ms-1 in vacuum.}
https://www.researchgate.net/post/What_is_the_speed_of_electromagnetic_waves_in_conductors

Is propagation speed related to frequency?

Propagation speed is determined by the medium only. Frequency and/or amplitude are unrelated.




Wesley

[kolbacict]

And in your Schumann waveguide, it also moves approximately at the speed of light?

[kolbacict]

багато хто з вас не бачить, наскільки Україна прекрасна ) але Я,  можу.
Тепер я бачу, наскільки знання української мови мені допомагає

Please tell me, is there an ambassador of the United States of America in Ukraine?
According to my information there is only a temporary attorney.

[stivep]

Ambassador Brink
She was nominated by President Biden to be U.S. Ambassador to Ukraine on April 25, 2022,
confirmed  by the U.S. Senate on May 18, 2022, and arrived in Kyiv on May 29, 2022.
Wesley