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Warp wrote:
> music CDs). Nevertheless, it's still a bad idea: The optical data is just
> there, naked, without any protection,
Sure, it's got protection. The actual data in written below the surface
of the disc, which is why scratches can be repaired on discs and you
won't lose any data.
--
Chambers
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Warp wrote:
> Naked optical media was a braindead idea from the start.
>
> Classic music CDs work mostly. The data density is relatively low (by
> modern standards at least) and they have so much error correction information
> that the CD has to be *really* scratched before it starts giving errors
> (although I'm pretty sure most people have their own stories about non-working
> music CDs). Nevertheless, it's still a bad idea: The optical data is just
> there, naked, without any protection, and can easily be destroyed inadvertedly
> by scratches, dirt and whatnot. Just accidentally drop the CD and you might
> have a scratch.
>
> Then they came up with the brilliant idea that hey, we need a new format
> with a lot more capacity than the CD, so let's create the new format to
> have the exact same shape and size as a CD so that players can support both.
> Good idea, except that you get all the problems of a naked optical media
> squared. Cubed. Due to the immensely higher data density, DVDs are like a
> hundred times more prone to get problems due to stains and scratches. Once
> again: Bare naked optical media, no protection whatsoever, extremely easy
> to detroy inadvertedly by accident.
Well, considering all this, I have a vast collection of CDs and my dad
has a comparable collection of DVDs, and they all work absolutely
flawlessly.
Doesn't seem like much of a problem to me. :-P
(What I *have* seen is old CD-Rs that stop working after a while. This
presumably is something to do with the ink...)
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Chambers <Ben### [at] gmail com_no_underscores> wrote:
> Warp wrote:
> > music CDs). Nevertheless, it's still a bad idea: The optical data is just
> > there, naked, without any protection,
>
> Sure, it's got protection. The actual data in written below the surface
> of the disc, which is why scratches can be repaired on discs and you
> won't lose any data.
Not to mention the box... :-)
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> Sure, it's got protection. The actual data in written below the surface
> of the disc, which is why scratches can be repaired on discs and you
> won't lose any data.
The exception being CD-R, where scratching the label side of the disk
really can scratch off the data...
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On 29-5-2009 10:22, Invisible wrote:
> Well, considering all this, I have a vast collection of CDs and my dad
> has a comparable collection of DVDs, and they all work absolutely
> flawlessly.
Try a child of your own or a grandchild.
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Warp wrote:
> Classic music CDs work mostly.
I read this and thought "What, rock and roll is easier to scratch??"
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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nemesis wrote:
> Darren New <dne### [at] sanrrcom> wrote:
>> http://startupearth.com/2009/05/28/a-deeper-look-inside-googles-o3d-api/
>>
>> Accelerated 3D graphics in javascript?
>
> Seems to require a plugin. More like Google's answer to Flash and Silverlight.
The way the article was written implied to me that it was HTML5 elements
with a google javascript library driving them (like "Yahoo widgets" or
jQuery are on top of standard features). I thought the plug-in was just
because HTML5 hasn't actually been implemented yet.
Certainly the canvas element is pretty scary. But I guess less scary than
continuing to pretend that HTML is for hypertext mark-up rather than
pixel-perfect interactive application construction. :-)
--
Darren New, San Diego CA, USA (PST)
There's no CD like OCD, there's no CD I knoooow!
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On Fri, 29 May 2009 03:45:58 -0400, Warp wrote:
> Classic music CDs work mostly. The data density is relatively low (by
> modern standards at least) and they have so much error correction
> information that the CD has to be *really* scratched before it starts
> giving errors (although I'm pretty sure most people have their own
> stories about non-working music CDs). Nevertheless, it's still a bad
> idea: The optical data is just there, naked, without any protection, and
> can easily be destroyed inadvertedly by scratches, dirt and whatnot.
> Just accidentally drop the CD and you might have a scratch.
Then it's worth being careful with the things you purchase.
Seriously, that's like saying "buy the extended warranty when you buy a
phone/pda/whatever because you wouldn't want it to get damaged" - last
time I was offered that, I told the seller that unlike most people, I
treat my purchases with care and make sure they're not going to get
dropped.
I have CDs and DVDs that I purchased years ago that I have no problems
with.
Jim
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On Fri, 29 May 2009 09:43:07 +0100, Invisible wrote:
>> Sure, it's got protection. The actual data in written below the
>> surface of the disc, which is why scratches can be repaired on discs
>> and you won't lose any data.
>
> The exception being CD-R, where scratching the label side of the disk
> really can scratch off the data...
Now that actually is true for pressed CDs as well, AFAIK.
Jim
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>> The exception being CD-R, where scratching the label side of the disk
>> really can scratch off the data...
>
> Now that actually is true for pressed CDs as well, AFAIK.
I don't believe it is, but I'll go test the theory later. (I've got a
few pressed CDs I wouldn't miss...)
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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