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[CN] The Race To Make The World's Strongest Magnet. - Page 3

post #21 of 64
Quote:
Originally Posted by andrews2547 View Post
who ever wrote that clearly does know that magnets no matter how strong will NOT erase data from any magnetic media because i tried it with a credit card (with neodymium magnets for several hours) and nothing happened it still worked and the same with hard drives USB flash drives cheap watches (analog and digital) and all of them still worked fine the only thing thats right there is the CRT monitor magnets and CRT is like chalk and cheese and everyone knows that
I took this bet with a guy at work, put it inside of a dc magnetizing coil, wiped it clean. so yes magnets can wipe your cards.
post #22 of 64
Quote:
Originally Posted by andrews2547 View Post
who ever wrote that clearly does know that magnets no matter how strong will NOT erase data from any magnetic media because i tried it with a credit card (with neodymium magnets for several hours) and nothing happened it still worked and the same with hard drives USB flash drives cheap watches (analog and digital) and all of them still worked fine the only thing thats right there is the CRT monitor magnets and CRT is like chalk and cheese and everyone knows that
Not sure about hard drives, but for magnetic stripe cards it depends on the coercivity. Most credit cards are HiCo, or high coercivity, and probably safe from erasure. Low coercivity magstripe cards could probably be erased.
post #23 of 64
Now I know nearly nothing about magnets but couldn't they make a really powerful one by making an electromagnet with lightning as the power source. Probably impossible even if the physics makes sense (wish i doubt it does)
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post #24 of 64
Quote:
Originally Posted by HybridCore;12745281 
We aren't learning physics in middle school! You take it in high school (with or without calculus).

It's called a library... God kids are lazy these days.
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post #25 of 64
    
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post #26 of 64
Quote:
Originally Posted by Socom View Post
Oh god.
 
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post #27 of 64
Quote:
Originally Posted by HybridCore View Post
We aren't learning physics in middle school! You take it in high school (with or without calculus).
Speak for yourself, they started teaching basic physics in 7th grade at my public school.
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post #28 of 64
Quote:
Originally Posted by Carniflex View Post
Only some radioactive particles are sensitive to magnets. Neutrons however are .. well ... neutral. Should you have strong enough magnet to affect neutrons you would have bigger problems than "controlling radiation".

Very strong magnetic fields can act in theory like solid matter (very hot solid matter), so you could just "pick up" the field - if you dont mind the burn that is.

More interesting implementation would be "star wars" or "star trek" style of shields, All you need is strong enough magnetic field and some plasma to be contained in it (you would want it to glow afterall I assume).
Just what we need - Another Philadelphia Experiment going on.
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post #29 of 64
Quote:
Originally Posted by andrews2547 View Post
who ever wrote that clearly does know that magnets no matter how strong will NOT erase data from any magnetic media because i tried it with a credit card (with neodymium magnets for several hours) and nothing happened it still worked and the same with hard drives USB flash drives cheap watches (analog and digital) and all of them still worked fine the only thing thats right there is the CRT monitor magnets and CRT is like chalk and cheese and everyone knows that
USB is solid state. big difference.
HDDs use magnetism, and if you put a magnet to it and start it up again without waiting a while (days) then all the sectors read as 1111111111...etc. so it wont work.degaussing wont help kuz it would all read as 000000000...etc. same with other magnetic storage devices.
but HDDs have magnetic shielding i think, so its a lot harder to do nowadays.
btw plz use commas (,) and proper punctuation.
Edited by Enfluenza - 3/15/11 at 7:26pm
    
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post #30 of 64
Quote:
Originally Posted by Socom View Post
ask the mormons.


and u used the meme wrong. fail.
    
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