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You might try glueing two magnets together, NS+SN, to make a longer magnet, then drop them together through the one coil...

Here is Amira Willighagen, aged about 10, who had no singing teacher, and did not read music, but who, I believe, learnt to sing by...

What is your question precisely ?

If the magnet is a bar with N-pole at one end and S-pole at the other, then to test the generator, turn the magnet, end for end, outside...

Yes. When you slide the magnet through the core, the field does not reverse, so you get no voltage induced.

SUPER TYPHOON: Ragasa ( Nando ) - Peak winds: Sustained 270 km/h ( 145 knots/ 168 mph ) - Peak Gusts: 325 km/h (175 knots / 201 mph ) -...

What pole orientation does the magnet have? How is the wire wound on the core? What type of galvanometer, with what current range? The...

That response is like a symmetrical over-centre latch. Are the units mg, g, kg, tonne or N ?

Open Office Writer got left behind when the project forked in 2010 to create LibreOffice, which is very widely used, on MS Windows, and...

A piston in a cylinder, like a bicycle pump, that is connected to a balloon. As the piston moves, high pressure is needed to begin...

Symmetry is not a likely reason for magnetic differences. Open gaps in the magnetic path, are a more likely cause. What material is...

Here is the short list of points in Florida that are at or above 50 feet...

That will change the magnetic properties, but it would actually harden it, and make it brittle. If you let mild steel cool slowly, then...

That is not critical. Use the greatest available diameter unless the magnet is switched on and off very rapidly. Use an uncoated iron...

You should try soft iron or mild steel for the pin, not stainless or high tensile steel. The more the pin material costs, the worse it...