When doing your sums, remember it's 1.68 x 10 ^ -8. That factor of 100 million is quite important.
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Electromagnets
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Electromagnets
While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.' -
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Originally posted by PRC1964 View Postkthxbai to borrow from my 18 year old nephew.
Newspeak is 2xgdWhile you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.'Comment
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Originally posted by doodab View PostIs he dyslexic? Or does he just have something stuck in his throat?Comment
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Originally posted by PRC1964 View PostWorse than that, he's 18.While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.'Comment
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I have to chuckle when I see that someone left me a -ve rep for my "pointless post" at 1am.
Go to bed you freak!
It's not pointless, the number up above is the resistivity of copper, an essential ingredient in calculating the current through your solenoid and the resulting heat emission. Leaving the aforementioned factor of 100 million out of your calculation causes you to overestimate the resistance of the coil and hence underestimate the current by a large factor. Which means it doesn't work quite as you expect.
If I can save one innocent battery from death it's worth it.Last edited by doodab; 24 May 2011, 06:10.While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.'Comment
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Originally posted by doodab View PostI have to chuckle when I see that someone left me a -ve rep for my "pointless post" at 1am.
Go to bed you freak!
It's not pointless, the number up above is the resistivity of copper, an essential ingredient in calculating the current through your solenoid and the resulting heat emission. Leaving the aforementioned factor of 100 million out of your calculation causes you to overestimate the resistance of the coil and hence underestimate the current by a large factor. Which means it doesn't work quite as you expect.
If I can save one innocent battery from death it's worth it.Comment
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Originally posted by Churchill View PostDo you factor in the increase in resistance as the temperature increases?While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.'Comment
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Originally posted by doodab View PostI think it's safe to say my mathematical models are not that sophisticated
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Originally posted by Churchill View PostWhat about thermal shock?
While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.'Comment
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