RPM
Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or r⋅min−1) is a unit of rotational speed (or rotational frequency) for rotating machines.
One revolution per minute is equivalent to hertz.
Standards
ISO 80000-3:2019 def ...
'' magazine number one Top Singles chart of 1972.
See also
*
1972 in music
This is a list of notable events in music that took place in the year 1972.
Specific locations
* 1972 in British music
* 1972 in Norwegian music
Specific genres
*1972 in country music
* 1972 in heavy metal music
* 1972 in jazz
Events
*Janu ...
AV Trust The Audio-Visual Preservation Trust of Canada (or the AV Trust). originally the Alliance for the Preservation of Canada's Audio-Visual Heritage,here at
Library and Archives Canada
Library and Archives Canada (LAC; ) is the federal institution tasked with acquiring, preserving, and providing accessibility to the documentary heritage of Canada. The national archive and library is the 16th largest library in the world. T ...
1972
Within the context of Coordinated Universal Time (UTC) it was the longest year ever, as two leap seconds were added during this 366-day year, an event which has not since been repeated. (If its start and end are defined using Solar time, ...