The Big Misconception About Electricity

However given human nature there are those who will tell you with conviction that they are immune to biases that affect all humans, they are special golden ear humans.

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I don't think it's golden eared at all for some. I think it is pure training.. Mechanics teach new mechanics what to listen for.. There is a lot of well trained mechanics that can hear a malfunctioning piece of equipment 1/2 mile away. YET some people standing right next to a failing piece of GRINGING metal and can't hear or feel a thing.. They aren't trained, so guess who shows up.. The guy who fixes things..

Mr djones51 you just haven't been trained to tell the difference..

300k piece of equipment, do you really think bias anything comes into play when you FIX a piece of equipment. It is either fixed right or it is not.. It either sound RIGHT or it doesn't..

Mechanics 101, "To thy own self be true". There is no crying in mechanicin', you are the last guy there.. No one else.. Your EARS better be golden.. LOL

Regards

I found the video fascinating.  Thanks for posting!

My wife and sister and maid make video in pool house tonight. All agree that the black mamba sound best and have combination of rigid and size that make good WAF too.

The video isn't relevant to lumped circuits, speakers wires, interconnects etc..

I don’t agree completely with his answer "D". That is true for a small circuit shown in his diagram but for large circuits inductance comes into play and he even alluded to that. In real life his super large circuit is going to take a lot of voltage to overcome the large inductance of that 1000’s of kilometers of wire. It takes time to build and collapse those E/M fields. Old style incadesent bulbs will start glowing almost immediately even as the voltage is building once the switch is closed but LED bulbs will not light up below a certain voltage. I notice that when I flip a switch in a room now it takes a brief moment for the LED bulbs to turn on.

Also, he mentioned that high tension (ie voltage) lines are suspended high in the air to keep away from the damp earth. Isn’t it also due to iron in the earth which would increase the impedance and/or inductance of the wires? Our neighborhood power lines are underground but the high tension wires remain above ground.

PS. I’m a mechanical engineer talking about electricity, I know. But if you all start making fun of me then I’ll start talking about electrical engineers who design electrical connectors.