audio2design
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Are we done yet?
We could pretend we are "audiophiles" and debate the merits of cable elevators for a bit?
Are we done yet?
Ok. For cables on the floor the external EM field will propagate in two differing dielectric materials (air and floor) with differing electric and magnetic permeabilities and hence speeds of light. This causes a dislocation in the signal resulting in.... (to be completed by the reader.) Adding risers mitigates this to a degree proportional to ones sensitivity to your chosen effect.We could pretend we are "audiophiles" and debate the merits of cable elevators for a bit?
We could pretend we are "audiophiles" and debate the merits of cable elevators for a bit?
You are baiting me. It is like waving a steak in front of a dog. I am holding back at the moment. But I could launch on this topic. But, again, I'm going to take the high road. Me and Mother Theresa!Ok. For cables on the floor the external EM field will propagate in two differing dielectric materials (air and floor) with differing electric and magnetic permeabilities and hence speeds of light. This causes a dislocation in the signal resulting in.... (to be completed by the reader.) Adding risers mitigates this to a degree proportional to ones sensitivity to your chosen effect.
Regards Andrew
PS this is not to be taken too seriously
You are baiting me. It is like waving a steak in front of a dog. I am holding back at the moment. But I could launch on this topic. But, again, I'm going to take the high road. Me and Mother Theresa!
That's what measurements say. You need to trust your ears instead. measuring things never tells you how they really sound. Oh, and the higher the price, the better the sound. Everyone knows that more money means better sound. Heck, if you spend enough on speakers ($30,000/pr) you do not have to bother with EQ or room treatments. Lifters seem to only work once they are above $500 a pair. The cheaper ones are just scams.After the last ??? pages in this thread is should be obvious that there is (practicaly) zero EM field outside a coax cable and almost zero around a twinlead, its almost all in the space between the cables. So lifters are nonsense.
Immediately?Someone finally did the experiment!
TLDR: current starts to flow immediately. Full current after light speed delay.
Someone finally did the experiment!
TLDR: current starts to flow immediately. Full current after light speed delay.
PCBD&F - a trade mag for EE's and PCB designers:
The Billion-Dollar Mistake
Engineering teams worldwide are facing increasingly difficult challenges to design electronic products and achieve good signal integrity and compliance.digital.upmediagroup.com
"Au: This article emphasizes the need to concentrate on design of transmission lines, or the “spaces,” instead of the “wires.” The industry focus has been on the movement of charges in the wires, which only occurs because the electric fields are moving. The energy is carried by the fields, not the displacement current. My apologies to the EM physicists for oversimplifying these concepts, but this approach will increase the chances of success for most designs....
Daniel Beeker is senior principal engineer, automotive field applications engineering, NXP Semiconductors"
There are more videos debunking it.Robert Ferenac and Eric Bogatin:
Explaining Veritasium Electricity Video: Energy doesn't flow in wires (with Eric Bogatin)
EEVblog 1439 - Analysing Veritasium's Electricity Misconceptions Video:
The vid they are refering to from Veritasium - the physicist that's been on lot's o PBS specials:
The Big Misconception About Electricity:
If anyone wants to calculate the inductance, don't forget to consider the effect of the iron core.So, as we're still kicking this dead horse...
Back to basics. What happens here? How are the fields distributed right before and after the switch is closed (and what fields)?
View attachment 181313
How fast does the bulb turn on?
If anyone wants to calculate the inductance, don't forget to consider the effect of the iron core.