CDs - the ultimate question

[Mr_Happy]

right - i've had this argument with loads of ppl in the last few days (so sorry if u've already read this but tuff)

 

i'm not scientist (i cant even spell it 4 gods sake) but i KNOW cds cant be wiped by magnets, yet every1 i chat too seem addimant that cds r part plasitic and part metal

 

my argument to u is - if cds could be wiped by a magnet, then y do cd players have a fukin lazer in em?!?

[DJ Elemental]

they cannot be wiped by magnets, other wise they be totally screwed as soon as u buy them, also their protected by eletronic magnet clips in most shops, so erm i think thats aload of poo.

 

Although CD's can be wiped

[Mr_Happy]

1 of me m8s recconed he could wipe a cd by leaving it on his speakers

 

i couldn't stop laughing

 

and sum1 else told me cds wernt made of plastic

[DJ Elemental]

blah bollocks if u ask me, credits to the guy if he can like

[alasdairm]

you could wipe a CD with a magnet - if you hit the CD with the magnet hard enough

 

seriously, a brief search on the internet found me this:

 

http://www.howstuffworks.com/cd.htm

 

send it to your friend.

 

alasdair

[DJ Elemental]

really? i didn't think that was possible, mind you, if you have to whack a CD with the magnet, most likely scratch it and leave it useless anyways hehe

[Mr_Happy]

thats the joke he was making

[alasdairm]

i was making a joke. that's why i said "if you hit the CD with the magnet hard enough :)"

 

i guess it fell flat on its face. apologies.

 

alasdair

[DJ Elemental]

time for me to stop licking the microwave i think, its clearly doing me no good

[Geordie Becky]

[LiquidEyes]

"i'm not scientist (i cant even spell it 4 gods sake)"

Ironically, Happy Dude, for once you actually spelt a word correctly!!

 

To reiterate what everyone else has basically said, you can't hurt a CD without scratching or dirtying it. Just like vinyl, the data actually consists of physical grooves in the disc. Only the grooves are much tinier, and encoded digitally, instead of as a continuous analogue signal! (to simplify somewhat)

 

That's why you need a laser. It can tell when there's a hole and when there's not, without making physical contact.

 

If I'm talking out of my posterior, someone please correct me

[Mr_Happy]

ur not- and that was the point i was trying top make 2 me m8s, but when they told me they thought a cd wasn't made of plastic i gave up and went home

 

 

Ironically, Happy Dude, for once you actually spelt a word correctly!!

 

bloody typical that