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Does a hard drive weigh more when full..? - Page 2

post #11 of 190
6/30/12 at 2:21pm
I actually read somewhere that it does in fact weigh more when full than when empty because when it is full it has more electrons on it.......don't know if that is true but if it is you would need something that could measure down to the weight of an electron to see the difference.

Edit: Although that might be and ssd and not hdd.
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post #12 of 190
6/30/12 at 2:23pm
An SSD would actually be heavier full.

Flash memory works by trapping a charge. Since electrons possess mass, a charged gate would weigh more than a blank one.
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post #13 of 190
6/30/12 at 2:28pm
does a blank DVD weigh more than a DVD with a movie on it? while we are at it does a region 1 DVD weigh more than a region 2 DVD?
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post #14 of 190
6/30/12 at 2:33pm
No
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post #15 of 190
6/30/12 at 2:34pm
Quote:
Originally Posted by Squeeker The Cat View Post

does a blank DVD weigh more than a DVD with a movie on it? while we are at it does a region 1 DVD weigh more than a region 2 DVD?

On DVDs there is a change in mass, owing to the fact that a small amount of the disk material is physically burned away by a laser when a binary ’1’ is recorded. Therefore, DVDs will have some variability in weight after it’s burned.
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post #16 of 190
6/30/12 at 2:40pm
Actually, yes. Sounds pretty unbelievable, but it weights a very unimaginably small amount more.

http://www.youtube.com/watch?v=WaUzu-iksi8
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post #17 of 190
6/30/12 at 2:43pm
Some seriously bizarre responses here.

HDD save data by creating magnetic fields. Applying the magnetic field to the platter does not effect its mass, so a HDD would not weigh more.
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post #18 of 190
6/30/12 at 2:48pm
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If you physically change the orientation of a magnet sitting on a table, do you change its mass? No....

 

 

That is basically how hard drives store data, by change the poles of the tiny magnets on the platter's surface. When this is done, no mass is added or created, just simply changing the state of a magnetic field.

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post #19 of 190
6/30/12 at 2:54pm
Theoretically it should weigh less since the air pillow the disk head floats on would wear down the platter by a minuscule amount. However this is completely unmeasurable and it is not really possible to prove this.

EDIT:
I just realised that it actually depends on how much food the hamsters spinning the platters around gets. If they over eat it will obviously weigh more.
Edited by fkjac - 6/30/12 at 2:59pm
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post #20 of 190
6/30/12 at 3:50pm
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Let's keep to responses that make sense and legitimately answer the OP's question.
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