A brief history of physics.

Imagine you are kid and you go to the playground.

You see two slides, one that the slide takes you down but you have to talk back up to outside, and one that is above the ground, you walk up and you slide down.

So a magnetic field is like a slide.

The pole that repels is asking you to go up on the slide, so to get the metal that you hold onto the pole that repels you exert effort. When you release it you get back the effort as momentum, the metal is repelled and you have slides down the slide.

The pole that attracts is the slide that takes you down but you have to walk up to get out, ie break apart.

The next question is how is a magnetic field created?

We don’t “create them”, but we modify the field, it exists regardless. We do that by aligning electrons or moving electrons through a medium. The two are intertwined.

A change in the magnetic field creates electricity, it’s how our generators work, by rotating magnetics we create an alternating current.

And moving electricity like say a capacitors creates a magnetic field. So the beautiful thing about capacitors is that if current is cut, there is a change in the magnetic field which generates electricity, and the two slowly reduce the current flowing. Beautiful isn’t it?

Any questions?

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