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Topic: The length of a 20:00 groove
| 28th Jul 2021, 9:13 AM | ||
 | carryonsidney a happy disposition is an omnious sign.... Member since Feb 2010 1707 Points Moderator | Spiral calculation L[enght] = 3.14 x Rx(D+d) /2 R= number of rings, in this case 33 rpm x 20 min = 660 D = outer diameter d = inner diameter ergo 3.14 x 660 x D+d divided by 2 = length of spiral Edited by carryonsidney on 28th Jul 2021, 9:23 AM |
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Vinyl Albums : Live Music : 78 RPM : CD Albums : CD Singles : 12" Singles : 7" Singles : Tape Media : Classical Music : Music Memorabilia : Cinema : TV Series : DVD & Blu-ray : Magazines : Books : Video Games : Create Your Own World
Latest » Items : Comments : Price Guide : Reviews : Ratings : Images : Lists : Videos : Tags : Collected : Wanted : Top 50 : Random
45worlds for music, movies, books etc : 45cat for 7" singles : 45spaces for hundreds more worlds