Just for fun you notice when you double the coil turns the volts triple?
1000 =5
2000 =16
4000 = 54
Obviously the other factors play a role like the diameter and length
for 1000 to double diameter the volt is 21
for length 10
for both 16
http://www.daycounter.com/Calculators/Coil-Physical-Properties-Calculator.phtml
Seems like a limited calculator.
On a capacitor you see how unlike a coil it covers itself in a wide spacing. The + - are at the start and end just like a coil. But unlike a regular coil I how not seen a insulated metal or tube that goes in the center of it to see any anyone see if any induction happens. Would it? When conducted would a insulated aluminum foil warped around a pipe be close to the coil physics or a capacitor?

What about a bifilar coil design to them with both of them? What results would you think come? Just throwing random thoughts out.
As a site stated
"Tesla explains that a standard coil of 1000 turns with a potential of 100 volts across it will have a difference of .1 volt between turns. A similar bifilar coil will have a potential of 50 volts between turns. In that the stored energy is a function of the square of the voltages, the energy in the bifilar will be 502/.12 = 2500/.01 = 250,000 times greater than the standard coil!""

1000 =5
2000 =16
4000 = 54
Obviously the other factors play a role like the diameter and length
for 1000 to double diameter the volt is 21
for length 10
for both 16
http://www.daycounter.com/Calculators/Coil-Physical-Properties-Calculator.phtml
Seems like a limited calculator.
On a capacitor you see how unlike a coil it covers itself in a wide spacing. The + - are at the start and end just like a coil. But unlike a regular coil I how not seen a insulated metal or tube that goes in the center of it to see any anyone see if any induction happens. Would it? When conducted would a insulated aluminum foil warped around a pipe be close to the coil physics or a capacitor?

What about a bifilar coil design to them with both of them? What results would you think come? Just throwing random thoughts out.
As a site stated
"Tesla explains that a standard coil of 1000 turns with a potential of 100 volts across it will have a difference of .1 volt between turns. A similar bifilar coil will have a potential of 50 volts between turns. In that the stored energy is a function of the square of the voltages, the energy in the bifilar will be 502/.12 = 2500/.01 = 250,000 times greater than the standard coil!""
