Beware: E-readers get heavier with each book - Page 2

1611mac · 10-31-2011, 11:57 PM

I'm a novice at this but i did have courses in Boolean Algebra (though I wasn't on TV). However, what is stored is not a zero nor a one. What is "stored" is a magnetic particle that represents a bit of data. NO?

howyoudoin · 11-01-2011, 01:15 AM

Does the battery charge state affect "weight" too?

OtterBooks · 11-01-2011, 01:21 AM

Obviously this is yet more proof that DRM is a burden on consumers.

wayrad · 11-01-2011, 07:54 AM

Quote:

Originally Posted by Who are you?

Actually it's the opposite of what you claim. Mass and energy are always equivalent, and mass is never lost, not even in nuclear reactions (because the energy in the system remains the same the mass has to stay the same as well per E=mc²).

http://en.wikipedia.org/wiki/Mass–energy_equivalence

Interesting, and entirely different from what my instructors and textbooks claimed in high school and even college. Considering how long relativity theory has been around, that seems surprising, but I suppose the interpretation of these things changes all the time. Still, I'm fairly amazed that it would do so on something that fundamental.

emellaich · 11-01-2011, 04:37 PM

Quote:

Originally Posted by OtterBooks

Obviously this is yet more proof that DRM is a burden on consumers.

emellaich · 11-01-2011, 04:59 PM

So, if you want to dig under the tech covers of how SSD's work see here:
http://www.engadget.com/2011/10/31/e...-ssds-and-you/

It seems I was wrong (once again) in my earlier musings.

A storage space in an SSD drive is basically a 'bucket' that holds a charge. In simple terms, a low level charge (around 2.5V) is a 1 and a higher voltage (5.5) is a zero. I should note that current SSD's support recognize more than two levels per cell or bucket.

When a bucket is filled with a charge it needs to start from zero. If I 'inject' a charge of 2.5V and I don't know what my starting charge was, then I will not know what my ending charge will be. There are several ways to handle it, but the one that has been chosen is to empty out the cells before they are overwritten. This means that the total net charge after a write operation will only be a result of the new charge inserted in the field and will not be influenced by any existing charge.

However, emptying the cells can take a smidgen of time. If each write needs to first empty its target cells and then write out the data, it will slow down write speeds. So, to make writes faster, cells are emptied when they are erased. This means that a subsequent write knows that it starts with empty cells and doesn't need to do any emptying of its own.

The bottom line is that empty cells will have no charge -- not a random value of 1 or 0, but no charge and thus, no value at all. Filling up a cell raises its charge to appropriate voltage level. So whether a one or zero is written there will be an increase in charge/energy. Thus, books do have higher energy and weigh more than empty memory.

ScalyFreak · 11-01-2011, 05:29 PM

Quote:

Originally Posted by OtterBooks

Obviously this is yet more proof that DRM is a burden on consumers.

And we have a winner.

Pickering · 11-01-2011, 08:34 PM

Reading the title I thought for sure this would be an Onion story!

carpetmojo · 11-03-2011, 12:27 PM

To borrow from M. Python....

This is very, very silly.

11-01-2011, 04:59 PM	#21
emellaich Wizard Posts: 1,101 Karma: 4388403 Join Date: Oct 2007 Device: Palm>Ebookman>IPaq>Axim>Cybook>Kndl2>IPAD>Kndl3SO>Voyager>Oasis	So, if you want to dig under the tech covers of how SSD's work see here: http://www.engadget.com/2011/10/31/e...-ssds-and-you/ It seems I was wrong (once again) in my earlier musings. A storage space in an SSD drive is basically a 'bucket' that holds a charge. In simple terms, a low level charge (around 2.5V) is a 1 and a higher voltage (5.5) is a zero. I should note that current SSD's support recognize more than two levels per cell or bucket. When a bucket is filled with a charge it needs to start from zero. If I 'inject' a charge of 2.5V and I don't know what my starting charge was, then I will not know what my ending charge will be. There are several ways to handle it, but the one that has been chosen is to empty out the cells before they are overwritten. This means that the total net charge after a write operation will only be a result of the new charge inserted in the field and will not be influenced by any existing charge. However, emptying the cells can take a smidgen of time. If each write needs to first empty its target cells and then write out the data, it will slow down write speeds. So, to make writes faster, cells are emptied when they are erased. This means that a subsequent write knows that it starts with empty cells and doesn't need to do any emptying of its own. The bottom line is that empty cells will have no charge -- not a random value of 1 or 0, but no charge and thus, no value at all. Filling up a cell raises its charge to appropriate voltage level. So whether a one or zero is written there will be an increase in charge/energy. Thus, books do have higher energy and weigh more than empty memory. Last edited by emellaich; 11-01-2011 at 05:02 PM.

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10-31-2011, 11:57 PM	#16
1611mac eWanderer Posts: 523 Karma: 1441998 Join Date: Jul 2010 Location: NC, USA Device: iMac,iPad3,iPhone5-Kindle Fire,Touch,PaperWhite	I'm a novice at this but i did have courses in Boolean Algebra (though I wasn't on TV). However, what is stored is not a zero nor a one. What is "stored" is a magnetic particle that represents a bit of data. NO?

11-01-2011, 01:15 AM	#17
howyoudoin how YOU doin? Posts: 1,100 Karma: 7371047 Join Date: Feb 2009 Location: India Device: Kindle Keyboard, iPad Pro 10.5”, Kobo Aura H2O, Kobo Libra 2	Does the battery charge state affect "weight" too?

11-01-2011, 01:21 AM	#18
OtterBooks Wizard Posts: 1,262 Karma: 2979086 Join Date: Nov 2010 Device: Kindle 4, iPad Mini/Retina	Obviously this is yet more proof that DRM is a burden on consumers.

11-01-2011, 08:34 PM	#23
Pickering Connoisseur Posts: 66 Karma: 29886 Join Date: Jun 2010 Location: Colorado Springs Device: Kindle 2, Kindle 3	Reading the title I thought for sure this would be an Onion story!

11-03-2011, 12:27 PM	#24
carpetmojo Wizard Posts: 3,117 Karma: 9269999 Join Date: Feb 2011 Location: UK Device: Sony- T3, PRS650, 350, T1/2/3, Paperwhite, Fire 8.9,Samsung Tab S 10.5	To borrow from M. Python.... This is very, very silly.

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