By understanding how an electric motor works you can learn a lot about magnetism and its relationship with electricity, and what better way to learn how a motor works than by building your own basic motor. But first, a little about the fundamentals of electricity and magnetism.
We’re on the verge of a once in an eleven year solar event that sounds as impossible as it does fascinating, if not a little menacing – a solar field reversal. More specifically, a complete reversal of the sun’s polar magnetic field which means that its magnetic north and south poles will change places entirely.
This blog post will look at how a speaker works and how you can make your own basic speaker.
Every audio speaker uses permanent magnets whether the speaker is in your car, in your stereo, your earphones or your smartphone. Permanent magnets provide the force that makes the component in the speaker that creates the sound, move.
When we talk about magnetic levitation what we are referring to is an object suspended by magnetic pressure which counteracts the effects of gravity. It generates images of large futuristic objects hovering and travelling at high-speeds.