rotations per minute

USAGE SUMMARY

The phrase "rotations per minute" is correct and usable in written English.
It is typically used in contexts involving machinery, engines, or any rotating objects to measure the speed of rotation. Example: "The motor operates at 3000 rotations per minute, ensuring optimal performance."

✓ Grammatically correct

Science

News & Media

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

The sputtering was performed with pure Ar plasma (20 sccm flow) at room temperature on a rotating substrate (5 rotations per minute) allowed the deposition of homogeneous layer of the same thickness across the wafer.

Nanoscale Research Letters

The disk rotates rapidly (up to 15,000 rotations per minute), and so the R/W head can rapidly reach any sector on the disk.

Encyclopedia Britannica

It can rotate at a massive speed of up to 600m rotations per minute (half a million times faster than a domestic washing machine).

The Guardian

The incubations were agitated either by inverting fifty times manually (∼3 min) or by continuous agitation on a rotating bench-top shaker (Biometra WT 17) at 50 rpm (rotations per minute).

Plosone

Gauges showed it was spinning at about 285 rotations per minute, generating a little over 2,000 watts.

The New York Times

The blades of these large machines do not move as quickly, about seven or eight rotations per minute, and make almost no noise.

The New York Times

The engine was linked through a chain-drive transmission to twin contrarotating pusher propellers, which it turned at an average speed of 348 rotations per minute.

Encyclopedia Britannica

Should his body go into a spin greater than 180 rotations per minute, his brain is likely to be liquidised by super-pressurised blood rushing to his head.

Independent

The Banbury mixer resembles a robust dough mixer in that two interrupted spiral rotors move in opposite directions at 30 to 40 rotations per minute.

Encyclopedia Britannica

The Recon Jet, for example, comes embedded with a one-gigahertz microcomputer, a high-definition camera, GPS, Wi-Fi and sensors to display training data like pedal power and rotations per minute.

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

1 human-written examples

Tubes were then immediately set to rotate end-over-end on a carousel at a constant 24 rotations-per-minute (the minimum rate found to fully suspend the slurry) and covered with aluminum foil to prevent light exposure.

Geochemical Transactions

Expert writing Tips

Best practice

When writing technical documentation, always specify the units of measurement, including "rotations per minute", to avoid ambiguity.

Common error

Avoid using informal abbreviations for "rotations per minute" outside of technical contexts. Always spell it out or use the standard abbreviation, RPM, in formal writing.

Linguistic Context

The phrase "rotations per minute" functions as a unit of measurement, specifically quantifying the speed at which an object revolves. It is commonly used in technical and scientific contexts, as Ludwig shows.

Expression frequency: Very common

Frequent in

Science

65%

News & Media

17%

Encyclopedias

8%

Less common in

Wiki

2%

Formal & Business

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "rotations per minute" is a standard unit of measurement used to quantify the speed of rotating objects. Ludwig AI confirms the phrase is grammatically correct and widely used. Its primary function is to provide a precise metric in technical and scientific contexts, with high frequency in science, news, and encyclopedia sources. While alternatives like "revolutions per minute" exist, it's crucial to maintain precision by specifying units of measurement in technical writing and avoiding informal abbreviations. Using "rotations per minute" correctly ensures clarity and effective communication in various technical and scientific domains.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

Revolutions per minute

Uses the synonym "revolutions" instead of "rotations", expressing the same concept.

Angular speed in RPM

Specifies "angular speed" and uses the abbreviation "RPM" for "rotations per minute".

Cycles per minute

Employs "cycles" as a replacement for "rotations", implying repetitive circular movements.

Turns per minute

Replaces "rotations" with "turns", indicating the number of complete turns in a minute.

Spin rate in minutes

Expresses the speed as a "spin rate", focusing on the spinning motion within a minute.

Rotational velocity per minute

Replaces "rotations" with "rotational velocity", emphasizing the speed aspect of the rotation within a minute.

Angular frequency per minute

Uses "angular frequency", a physics term, to describe the number of angular rotations each minute.

Degrees turned per second (converted to minutes)

Measures rotation in degrees per second and then converts to an equivalent rate per minute.

Rate of gyration (per minute)

Employs "rate of gyration", a formal term for rotational motion within a minute.

Rotation frequency (in 60 second intervals)

Uses "rotation frequency" and specifies that it's measured over 60-second intervals (a minute).

FAQs

What does "rotations per minute" mean?

"Rotations per minute" (RPM) is a unit of measurement that indicates how many times an object completes a full rotation in one minute. It's commonly used to measure the speed of engines, turbines, and other rotating machinery.

What is another way to say "rotations per minute"?

A synonym for "rotations per minute" is "revolutions per minute", which also uses the abbreviation RPM.

How is "rotations per minute" measured?

"Rotations per minute" can be measured using various instruments such as tachometers, stroboscopes, or sensors that track the number of complete rotations over a period of one minute.

Is "rotations per minute" the same as "rotations per second"?

No, "rotations per second" measures the number of rotations completed in one second, while "rotations per minute" measures rotations in one minute. To convert from rotations per second to "rotations per minute", multiply by 60.