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Does a hard drive weigh more when full..? - Page 10

post #91 of 190
This OP made me smile.
post #92 of 190
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Quote:
Originally Posted by Kand View Post

This OP made me smile.

frown.gif
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post #93 of 190
Quote:
Originally Posted by {Unregistered} View Post

So what have we finally concluded?
Optical media (DVD / CD etc) weigh less when burned with data because plastic is physically burned away with the laser.
Hard drives (and other magnetic media) weigh the same because no net electrons are added as only the orientation of the magnetic poles of each particle in them is changed.
Flash memory weighs more due to the addition of electrons when 1's are written.
Is this correct?
If it is, it should be added to the OP.
Not in the circumstance I mentioned is material burned away.It depends on the method
If you read the article Compact disc, you will see that for recordable CDs, their surfaces are coated with a substance whose properties may be altered by heat or light. None of the substance is lost or gained. Its properties merely change through the application of energy. (After edit conflict: Jfarber may be right about burning plastic. But you would not be making grooves with your home computer. CDs with grooves (beneath the plastic) would be made in a special manufacturing facility

With the hdd and the electrons.The idea that the electrons were split off and destroyed sounded a bit like some type of fission was being suggested.Breaking the bond that holds electrons in the orbit around their atom sounds a bit agressive when all you want to do is store data.
Edited by PCCstudent - 7/1/12 at 1:11pm
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post #94 of 190
A flash based storage device likely fluctuates in weight based on its millimeter scale ALTITUDE (or the phase of the moon it was measured in, the amount of people standing near it, or 1 billion other things) more than being full or empty of electrons charge. You can not even experimentally verify the weight change at that small of a scale, so any answer is going to be hypothetical and likely mired in tons of complexity that cannot be verified.

In the same capacity, I can deflect a bullet by sneezing on it and deform a 60 foot thick wall of steel by punching it.
Edited by _02 - 7/1/12 at 4:27pm
    
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post #95 of 190
Nothing to see here, move along.I have seen these totally hypothetical arguments easily break 100 posts.If they generate any type of logical thinking or motivate people to read,they are worth it.
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post #96 of 190
Everyone missed the fact also that "full" vs "empty" may mean nothing as it's just a different combination of binary units of storage. "Full" doesn't mean there are more "1"s than "empty".
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post #97 of 190
then the question becomes: which is a heavier bit; 0 or 1.
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post #98 of 190
Quote:
Originally Posted by Nocturin View Post

then the question becomes: which is a heavier bit; 0 or 1.
On a hard drive or optical disk, neither. A trapped electron is probably a 1 on solid state memory.
post #99 of 190
Quote:
Originally Posted by PCCstudent View Post

Nothing to see here, move along.I have seen these totally hypothetical arguments easily break 100 pages.If they generate any type of logical thinking or motivate people to read,they are worth it.

Fixed.

I was reading something somewhere; or it may have been a video, either way I was told about it a few times. - I'm pulling from memory so it may not be exact, but if data transmitted was to have a weight, things like hard drives and flash drives would get heavier as they filled.

Thank goodness that science/physics doesn't play out in that sense.
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post #100 of 190
Quote:
Originally Posted by Art Vanelay View Post

Quote:
Originally Posted by Nocturin View Post

then the question becomes: which is a heavier bit; 0 or 1.
On a hard drive or optical disk, neither. A trapped electron is probably a 1 on solid state memory.

Yep, a 1 = electron filled gate

Source: http://www.overclock.net/t/1227597/how-to-secure-erase-your-solid-state-drive-ssd-with-parted-magic#post_16684060
Quote:
NAND flash memory uses floating gate MOSFET transistors. Their default state is when the charge is over the 50%. If the flow through the gate is above the 50% threshold, it has a value of 1. When the charge passing through drops below the 50% threshold, the value changes to 0.

0's are data, 1's is erase....the fundamental laws of MLC NAND dictate this. You only write the 0's when you write data to NAND.

So in an erased state the NAND has to report a 1.
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