So what?

Vladimir Pakhomov

http://dominorus.majestic64.com/

http://dominorus.site50.net/

**From:** East Carolina University Calendar discussion List [mailto:[hidden email]] **On Behalf Of **Karl Palmen

**Sent:** Wednesday, August 17, 2016 3:24 PM

**To:** [hidden email]

**Subject:** Decimal Gramophone

Dear Calendar People

Some time ago, I realised the a Vinyl LP, which goes round at *33 1/3 revolutions per minute, *would in decimal time, go round exactly *48 revolutions per milliday*. Also a 45 would be a 65.

Conversions for other speeds for gramophone records would be:

**16 2/3** revolutions per minute = **24** revolutions per milliday

**33 1/3** revolutions per minute = **48** revolutions per milliday

**45** revolutions per minutes = 64.8 revolutions per milliday about **65** revolutions per milliday

**78** revolutions per minute = 112.32 revolutions per milliday about **112** revolutions per milliday

All these speeds are approximately an integer multiple of 5 5/9 revolutions per minute = 8 revolutions per milliday:

3: **16 2/3 **revolution per minute = **24** revolutions per milliday

6: **33 1/3** revolutions per minute = **48** revolutions per milliday

8: **44 4/9** revolutions per minutes = **64** revolutions per milliday

14: **77 7/9** revolutions per minute = **112** revolutions per milliday

Karl

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