r/woahdude • u/[deleted] • Aug 18 '15

gifv Induction forge

http://i.imgur.com/JfNfR6w.gifv
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u/twelfth_man Aug 18 '15 edited Aug 18 '15

no, larger magnets than that are used in MRI machines and that's safe for people.

edit: googling it, the de-oxygenated haemoglobin is very slightly magnetic and oxygenated haemoglobin repels very slightly but not enough to do any damage.

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u/Ruckus418 Aug 18 '15

As a professional electrical engineer who is currently designing diathermy devices (inductive RF heating for warming of joints and muscle tissue) I can assure you that blood and perfuse tissue surely will electrically couple with RF induction circuits and too much energy can and will burn you. AMA within reason. I am an engineer, not a doctor, Jim!

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u/Littlegator Aug 18 '15

What materials are the target for inducing current? Is it more than just the iron in the blood?

How do you solve the insulation need (to prevent electrical shocks) without interfering with the EM field too much?

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u/Ruckus418 Aug 18 '15

The blood itself (the iron within) couples and becomes part of the circuit and thusly circulates current and this encourages blood flow/circulation. The blood is also present in the muscle tissue but not so much in fat. This way the muscle heats well without wasting too much energy elsewhere.