I have been doing some research lately into magnetic field versus power input. I ended up reading into Joseph Newmans story. I actualy watched the film also, which is very interesting. You have a link here if you want to watch it:
The movie was promising so I searched for more info on the theory behind Newmans invention. From all I have seen and read about this topic, I think the next experiment is the core principle:
2 x steel core: -Cilindrical shape, Diametre=2.53mm, Lenght=20mm;
1 x enameled wire: -Diametre=0.5mm, Lenght=514.25mm, Resistance=0.043 ohm, Mass=0.9g;
1 x enameled wire: -Diametre=1.0mm, Lenght=2057mm, Resistance=0.043 ohm, Mass=14.4g;
I take one of the cores and I wind all of the 0.5mm diametre enameled wire on it. I have 1 layer and a total of 32 turns on it.
I take the other core and I wind all of the 1.0mm diametre enameled wire on it. I have 5.27 layers and a total of 80 turns +- 15 turns.
You have pictures atached if you want to see more.
I treat the the coil and core assemblys as electromagnets with the folowing specifications:
Assembly 1( with the 0.5mm wire):
Assembly 2( with the 1.0mm wire):
By using the same amount of power (VxA) we can have different magnetic field strenght. The only thing that changes to produce this differences is the conductors characteristics (lenght, mass, volume, etc.)
I hope you see the beauty of this experiment and that it will help you in your journey.
All the best,