How do magnetic therapy bracelets work?

Wow!! It's a question of the questions. If answer would be given/found, than Pharma industry takes serious blow. I've read all 5 answers given by EE guys. They know a lot about their field, but nothing about Anatomy and Physiology. For them its simple and seems to be logic: if human body cannot attract

Does magnetism affect human behavior?

One paper was published - that I know of, there could be more - about a tribe in Australia that the members apparently were able to cultivate a sensitivity to the Earth's magnetic field, such that they can be blindfolded,

How to increase the strength of an electromagnet by

The equations are simpler if we look at an infinite solenoid, a coil of wires of effectively infinite length. The simple equations allows us to see what the important variables are.The equation for the magnetic field of a Solenoid - Wikipedia is[math]B \approx \mu N I[/math]where [math]B[/math] is

How does an electromagnet work?

From Wiki.An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire

I see lots of crazy machines I would not invest a penny in , does anyone really have a working permanent magnet motor or is it all hype and a big scam?

The laws of thermodynamics have withstood every test thrown at them for the past 150 years. If anyone claims to have found an exception to them, they are either scammers, naively misguided, or focusing in on some highly local effect that gets evened out as soon as you try to do something useful

Would it be possible to make an electromagnet float using just the earth's magnetic field?

Yes.  I leave it as an exercise for the reader to figure out how. :)No, really it can, but you would be way outside of the atmosphere (1000 km high plus), and you'd have big solar arrays to generate sufficient