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Can magnets screw up or erase DVDs?

Discussion in 'Archived Threads 2001-2004' started by StephenA, Jan 30, 2002.

  1. StephenA

    StephenA Well-Known Member

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    Earlier while watching Shrek, I was cleaning the area I was sitting at. Not thinking, I put a magnet on the case, which had the second disc in it. I quckly realized what I did, and took it off. I put the disc in my player, and it started out ok. I'll have to check it thouroughly later. I hope I didn't do anything to screw it up.
     
  2. Brian Kidd

    Brian Kidd Well-Known Member

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    DVDs are optical, mot magnetic, media. You have nothing to worry about. Now, if you try that with a videotape, you're up a creek.
     
  3. Tony_Faville

    Tony_Faville Well-Known Member

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    Uh, no..... DVD's are laser/light based, a magnet will not affect them.
     
  4. StephenA

    StephenA Well-Known Member

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    Ok, thanks. I just wanted to make sure. Better to be safe than sorry.
     
  5. Julie K

    Julie K Well-Known Member

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    Just don't drop a big one on your DVD [​IMG]
     
  6. Horatio Jones

    Horatio Jones Well-Known Member

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    indeed don't drop one [​IMG]
     
  7. Eric Huffstutler

    Eric Huffstutler Well-Known Member

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    DVD's are like music CD's and manufactured much the same way. The data is "pressed" into a metallic layer, not magnetically recorded like tapes or floppy discs so there is no way to erase the information. No more so than erasing a vinyl 45rpm record (you do remember them don't you) [​IMG]
     
  8. Nick_Scott

    Nick_Scott Well-Known Member

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    _____________________________________________

    ...so there is no way to erase information..

    _____________________________________________

    On a related note:

    My DVD players manual (RC5231z) says do NOT put

    CD-R, or DVD-R discs into the player. It will

    erase the information.
     
  9. Kwang Suh

    Kwang Suh Well-Known Member

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    If you hit your DVD with a magnet, then you could have a problem [​IMG]
     
  10. Julie K

    Julie K Well-Known Member

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    Ways to destroy a DVD with a magnet:

    Drop 500 pound magnet onto DVD.

    Pour sand onto DVD surface and rub magnet across it - "erasing" the disc.

    Tie string around magnet. Attach to hole in DVD to use as weight in a jar of hydrochloric acid.

    Melt magnet and shape into bullet. Fire from large caliber rifle at DVD.
     
  11. Dennis Nicholls

    Dennis Nicholls Well-Known Member

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    Actually if you melted a magnet and formed it into a bullet, most likely the magnetism would cease due to the domains realigning due to the great heat. However it would still blow holes in a DVD. [​IMG]
    Actually if you got a really big magnet (think physics particle accelerators) and ran a DVD past it, the eddy currents may deform the metal layer within the DVD. One of my crazier physics profs working at SLAC once put his head through a large magnet there and said he "saw" strange colors.... [​IMG]
     

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