Why do we have to keep computer disks away from magnets?
please explain in scientific way ~~thankyou
2006-11-14 17:22:28 · 11 answers · asked by kevin09132002 3 in Science & Mathematics ➔ Physics
Computer disks store data as reversals of magnetic field in the coatings on the disk. It's like a tape recording laid out on a flat surface.
Therefore, a magnet can flip the field and erase the data.
2006-11-14 17:27:13 · answer #1 · answered by arbiter007 6 · 3⤊ 0⤋
Computer disks store information by magnetizing the ferrous (rust) coating. A magnet will destroy data because the magnetic fields on a disk that hold information will be distorted. A magnetic field on a computer disk can have its component molecules either have a slight magnetic charge (a "1" in machine language) or no charge (a "0" in machine language). Thus, binary code. A group of 8 bits with 0 and 1 energy potential make up a byte. 16 bits make up a computer "word" (2 bytes). Put it in base 16 and you have hexadecimal notation. Most computers now process 32 bits at a time.
2006-11-14 17:48:31 · answer #2 · answered by Anonymous · 0⤊ 0⤋
See computer disks have a magnetic coating on them which possess the capability of storing data. Now if a magnet is allowed to come close to it then it might happen that it tries to attract the iron fillings on the disk which may lead to corruption of data or the disk may get damaged too.
2006-11-14 23:31:25 · answer #3 · answered by Napster 2 · 0⤊ 0⤋
Because magnets have a there on magnetic field on surroundings, In the case of Compact Disc it have also an magnetic effect so when two magnetic poles become near they may cause problems in the Disc and the final result is lost data.
2006-11-14 18:04:48 · answer #4 · answered by Anonymous · 0⤊ 0⤋
A section (very small section) of a disk has a net magnetic moment. In the formalism, the magnetic moment is pointing either up or down. You can store binary code in this way. 0 is up and 1 is down, ot 1 is up and 0 is down. Either way, you can set the magnetic to be up or down and once you do this, it will stay up or down. Materials that have this property are called ferromagnetic (Ferrum is latin for iron, and iron has this property). If you apply a strong enough magnetic field to the disk, it scrambles the magnetic moments, thus ruining any data you have stored.
2006-11-14 17:46:57 · answer #5 · answered by Biznachos 4 · 0⤊ 0⤋
Computer Discs work on Magnetic Fields of Ferrorus Compounds . Interaction with magnets may cause problems .
2006-11-14 17:31:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋
btw, you only need to keep magnetic disks away from magnets and only strong-ish magnets. A reasonably strong refrigerator magnet could probably wipe out a floppy drive (do you even have one of those?) but not a hard drive.
And the other disks - CD, DVD - it doesn't matter. They don't generally rely on magnetic materials.
2006-11-14 17:42:22 · answer #7 · answered by Anonymous · 1⤊ 0⤋
It uses a magnet to write data.
A hard drive uses the same technology.
this is true for 5.25" disks, 3.5" disks, HDD, all types of cassette, as far as I know.
2006-11-14 17:31:55 · answer #8 · answered by Anonymous · 0⤊ 0⤋
the records stored on magnetic tape and magnetic computing device table is written and study making use of magnetics. in the event that they are uncovered to magnetic fields it could replace the records, or erase areas of it. There via inflicting you to no longer be waiting to study the records.
2016-10-03 23:42:40 · answer #9 · answered by kuhlmann 4 · 0⤊ 0⤋
mythbusters proved that putting credit cards/disks/anything else storing something electronicly cannot be erased from a regular magnet. they finally erased the credit card by making a magnet's strength over 1000 gauss. that high number can not be found in any household place
2006-11-14 17:37:26 · answer #10 · answered by Mike P 3 · 0⤊ 1⤋