Physical Science 6.7b - Magnets and Magnetic Domains

An introduction to magnets and magnetic domains. From the Physical Science course by Derek Owens. Distance learning courses are available at http://www.derekowens.com

Category:

Education

Tags:

• magnet
• magnets
• magnetic domain
• magnetic domains
• physical science
• Derek Owens

[2Bitter2bSweet]

so if i place a magnet next to a conductor with current in the opposite direction, will the north and south poles exchange themselves?

and also if i place a magnet next to some electronic device will either of them get damaged in anyway??

thanks!

[derekowens]

@2Bitter2bSweet If the magnet is free to rotate, like a compass needle, then it would. If the material is one that is easily magnetizable, then yes, the poles could rearrange themselves.

Placing a magnet near an electronic device will usually not damage it. Some very sensitive electronic devices, though, could be damaged by magnets. Particularly if the magnet is moving, because that would induce a current.

[AaaaghJOE]

i like learning



[ferenckarvak]

thx for excellent tutorial. Magnet can be the infinite source of energy. We can use magnetic forces to create mechanical/electrical energy. Robert Adams motro/generator is good solution.

[mephatboi]

how r these magnetic domains created?

[sullivanseven]

this is so good, I like the way you simplify things

[JettyXYZ]

At 4:42

You say that North end is at that end, but doesn't it travel N to S?

[derekowens]

@vanityvideo  About God being light, I'm reminded of CS Lewis saying that he thought of God as like the Sun, not so much because he could observe it directly, but because it was by it that he could observe everything else.

[derekowens]

@vanityvideo Light coming from a light bulb or from a fire is still light. How you observe it will determine whether it appears to be a particle or a wave. For example, if you set up an apparatus to measure its frequency, then you are focusing on its wave characteristics.