Talk:Q206037
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Autodescription — revolutions per minute (Q206037)
description: number of rotations around a fixed axis in one minute
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- Report on constraint conformation of “revolutions per minute” claims and statements. Constraints report for items data
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Herz or "radian per second" - SI unit? --Infovarius (talk) 14:28, 23 April 2021 (UTC)
- In the SI the radian can be set to one freely. Toni 001 (talk) 09:16, 24 April 2021 (UTC)
- And Herz is "rotation per second", so it's not SI. --Infovarius (talk) 12:46, 26 April 2021 (UTC)
- The SI Brochure (9th edition): Concise summary (Q68977959) mentions hertz (Q39369) in table 2 as unit of frequency (Q11652), equal to a reciprocal second (Q6137407). The reason why hertz can be used for rotational frequency (Q30338278), too, is that "rotation" is a counting unit, which simply disappears in the SI. Toni 001 (talk) 04:42, 27 April 2021 (UTC)
- And Herz is "rotation per second", so it's not SI. --Infovarius (talk) 12:46, 26 April 2021 (UTC)