There's an easy way to see how much space one has left on a CD.
On many CDs, you can hold it up to the light and tilt it so that you can see
a darker band at the beginning. This is the data. Since CDs hold about 640
MB, if the band is only 1/3rd of the disk, then there's more than 200 MB of
space left.
This works with some CDs, but not with others.
Anyway, the idea of CD business cards is quite clever. Yes, one could hand
out CDs themselves, but you don't really carry CDs around with you. But a
handful of CD business cards is feasible. It would seem to be the next big
hit at tradeshows.
___________________________________________________
Andreas Ramos [EMAIL PROTECTED] www.andreas.com
-----Original Message-----
From: Bill Houle <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Wednesday, October 21, 1998 12:17 AM
Subject: Re: WC:>: Beyond Business Cards
>franko said:
>>
>> At 20:16 20/10/98 -0700, Andreas Ramos wrote:
>> >whoa! with 18 MB, this would be spectacular for handing out demos of
one's
>> >products, etc.
>> >___________________________________________________
>>
>> Ok, maybe I'm a bit thick but isn't this just a scaled-down CD ROM.
>
>Not having seen one, I can only go by the description in the
>article. I believe it to be that the novelty is in the shape. Do you
>understand that it is a rectangle? Fits nicely in a wallet. Try that
>with a traditional CD!
>
>On the technical side, hold a biz card up to a CD and look at how
>much "platter" you have outside the clear plastic of the spindle ring.
>Not much. Now, I'm assuming the CD will not 'track' off the edge of
>the rectangle and then reacquire on the other side. The laser has to
>track in concentric circles, and given the size of a biz card, you
>don't have too many millimeters of concentric circles available. 18Mb
>is pretty good all things considered...
>
>--bill
>
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