when i wrote this i didn't know that depending on the distance from the center, the grooves are actually compressed. that just seems strange. as i said, i don't spin so i wouldn't know. you learn something new every day.
cheers. -- Joshua Hill - [EMAIL PROTECTED] icq: 3045997 / aolim: mandlebrot314 www.ai-studio.com/josh - homepage www.hillhaus.com - detroit cyberia www.ai-studio.com - curator -- ----- Original Message ----- From: "Neil Wallace" <[EMAIL PROTECTED]> To: "Joshua M. Hill" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]>; <313@hyperreal.org> Sent: Monday, July 17, 2000 4:56 AM Subject: Re: [313] loops/lock grooves > > The distance traveled is greater but the time for one revolution remains > the same. > > The same principle applies in audio cassettes where the tape travels at > differing speeds at diffferent point on the tape (due to more or less > tape on the winding reel) but it does not matter so long as this is the > same at playback as it was during record. > > On a related note I saw a hexagonal record in a shop window the other day > which had haxagonal grooves!! > > > > On Sat, 15 Aug 1998, Joshua M. Hill wrote: > > > i agree that the needle always travels at the same velocity, the record is > > always turning at 33-1/3 rpms. > > > > but the circumference of a locked groove at two different positions on the > > record will be different lengths. traveling the same velocity on each of > > these grooves, one will be longer than the other. imagine a needle on the > > outside edge, every revolution it will cover about 31 inches. on the inside > > edge, it will cover about 12.5 inches per revolution. now if these are both > > played at the same velocity, your going to have to find the correct place at > > which a 133+1/3 rpm loop can be placed on the record. > > > > cheers. > > > > -- > > Joshua Hill - [EMAIL PROTECTED] > > icq: 3045997 / aolim: mandlebrot314 > > www.ai-studio.com/josh - homepage > > www.hillhaus.com - detroit cyberia > > www.ai-studio.com - curator > > -- > > ----- Original Message ----- > > From: "joe beuckman" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Cc: <313@hyperreal.org> > > Sent: Saturday, July 15, 2000 2:30 PM > > Subject: Re: [313] loops/lock grooves > > > > > > > >on the outside, the record has a larger diameter. played at 33-1/3 rpms, > > > >you > > > >could play a locked groove with less bpm. on the inside, it is smaller > > and > > > >you could play more bpm. i mean, the difference in circumference is like > > 19 > > > >inches! (2pi5 - 2pi2). maybe i'm just wrong. > > > > > > a common misconception... > > > this is like saying time passes more quickly on a large wall clock than on > > a > > > pocket watch. the rpm (angular velocity) of the turntable is independent > > of > > > the tone arm's position (radius.) > > > > > > mechanics! > > > > > > for philosophy, see jeff mills' rings of saturn. > > > :) > > > > > > jb > > > ________________________________________________________________________ > > > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > >
