Best presentation on the web on this subject. Especially like how you use graphics to present the material in a smooth narrative minus the tedium of watching you write it out as in so many other videos.
@@emviso This was exactly my question too! Thanks for taking time to explain this and for posting you really helpful videos. I wish you all the best! . Dan Marquez, thank you for asking the question :)
@ 0:07 If the AC-frequency is 60 Hz, then the wavelength is 5 million meter. The wires in your house are thus electrically very small compared to this wavelength.
IN GENERAL, A CAPACITOR CAN HAVE A VOLTAGE-DROP TOO. BUT AT HIGH FREQUENCIES IT GOES TO ZERO. I SUPPOSE THAT THE CONDUCTANCE IS JUST ASSUMED TO BE NEGLIGIBLE.
Best presentation on the web on this subject. Especially like how you use graphics to present the material in a smooth narrative minus the tedium of watching you write it out as in so many other videos.
Thank you! I appreciate the encouragement!
These are great videos. Very clearly presented and everything is derived from first principles. I'm not sure why they don't have more views. Thanks
Great video. Very hard to find. Clear and precise. Comes in very handy as I prepare for the PE Power exam. Thank you so much!
The best video on TH-cam explained this subject. Thank you very much
Thank you!
This is amazing oh my god, so clear and concise
This is a great video - really helped with my revision for Electrodynamics exam
Omg, this is fantastic! Thank you for uploading these videos!
Thank you for the comment! I appreciate it!
This is fricking amazing! Thank you!
Really nicely presented
Really helpful!
why the bottom wire has no resistance
it's not electrically small, its electrically a nice guy
Where did dV(z,t)/dz at time stamp 3:05 come from??
Hi Dan,
It comes from taking the limit of the previous equation as delta L approaches zero.
@@emviso Thank you! I had to refresh my calculus to succeed. Your videos are great!
better than my prof
How do you define z? How can z be added to delta L when they have different units? I am thoroughly confused.
Hi Dan,
z is the spatial variable in the direction of the transmission line. It has units of meters, and so does delta L.
@@emviso Thank you!
@@emviso This was exactly my question too! Thanks for taking time to explain this and for posting you really helpful videos. I wish you all the best! . Dan Marquez, thank you for asking the question :)
@ 0:07 If the AC-frequency is 60 Hz, then the wavelength is 5 million meter. The wires in your house are thus electrically very small compared to this wavelength.
The phase velocity of an EM wave traveling in a transmission line is generally significantly slower than c.
@@emviso Yep, but even if v-phase is only 1 percent of c the wires in homes are still electrically long.
@veronicanoordzee6440 you mean electrically short - and yes, that's definitely true!
@@emviso You got me ;-) Of course.
IN GENERAL, A CAPACITOR CAN HAVE A VOLTAGE-DROP TOO. BUT AT HIGH FREQUENCIES IT GOES TO ZERO. I SUPPOSE THAT THE CONDUCTANCE IS JUST ASSUMED TO BE NEGLIGIBLE.
V(z,t) and I(z,t) seem important. So let's go ahead and define z. Does z = 0 x ℓ ?
The derivatives should be partial
Why?