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I want a powerfull electromagnet? Answered

Dear friends, For my thesis, I need a strong electromagnet. How can I made it? It must be as strong as possible. Thank you so much. Best Regards. Reza

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UziMonkey (author)2009-02-11

You can build a simple electromagnet by wrapping wire around iron (such as a nail). I think we all did that when we were kids. The same thing could be used to create a stronger electromagnet, using a length of magnet wire and an iron core. Just how powerful does the electromagnet need to be?

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mbc711 (author)UziMonkey2009-02-11

My dear friend, Thank you so much. You can see my explanations above.

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chuckr44 (author)2009-02-11

Does it have to be an electro magnet, or will any magnet do, like a neodymium? Get the magnets (neodymium) out of an old hard drive. I attached one to my fridge and I use it to open the fridge door (just for fun). Very powerful, be careful.

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mbc711 (author)chuckr442009-02-11

Thank you so much. You can see my explanations above.

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Plasmana (author)2009-02-11

How strong do you need it? Because they are some electromagnets that can lift quite a few tons of steel.

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mbc711 (author)Plasmana2009-02-11

Thanks for your answer my dear friend.
It have to move a sphere steel (diameter=5mm) that is in distance of 50 mm(5 cm) of electromegnet.
I used a lot of simple magnets, but all of them failed.
Really, I want to stirrer chemical compounds in a high pressure cell.
The distance between sphere steel and outside of cell is 5cm, and with this distance magnetic stirrer could not to be used successfully.

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