rotation period

USAGE SUMMARY

The phrase 'rotation period' is correct and usable in written English.
It can be used to refer to a period of time during which a certain task or activity is performed regularly. For example: The business has a strict rotation period which requires the team to check the building's security systems every two weeks.

✓ Grammatically correct

Science

Encyclopedias

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Ida's rotation period is 4.63 hours, making it one of the fastest rotating asteroids yet discovered.

Wikipedia

The fire rotation period was 51 years.

Forest Ecology and Management

No single rotation period can explain the exhibited brightness variations.

Nature

We interpret this as the rotation period of the primary.

Princeton University

The reason is that Kepler would not be able to measure the rotation period of the Sun, as sunspots have lifetimes much shorter than the rotation period.

Nature

Such details can help students determine properties like mass, radius, temperature and rotation period.

The New York Times - Tech

Drahus, M. & Waniak, W. Non-constant rotation period of comet C/2001 K5 (LINEAR).

Nature

Dr. Millis said it was "extremely difficult" to determine the rotation period.

The New York Times

Rotation period estimates are inconsistent and varied, with reported values between 6.9 and 8.3 h (refs 4,5,6,9).

Nature

They found that Mercury had a rotation period that was two-thirds of its year, or 58.7 days.

Britannica

For Earth-based observers, the planet's 9.92-hour rotation period quickly brought each impact site into view.

Britannica

Expert writing Tips

Best practice

When describing celestial bodies, specify whether you are referring to the sidereal or synodic "rotation period" for clarity. Sidereal refers to rotation relative to the stars, while synodic is relative to another object (like the Sun).

Common error

Avoid using "rotation period" when you mean "orbital period". Rotation refers to an object spinning on its axis, whereas revolution refers to an object orbiting another object.

Linguistic Context

The phrase "rotation period" functions as a noun phrase, typically serving as the subject or object of a sentence. Ludwig AI confirms its proper usage in various contexts, from astronomy to forestry.

Expression frequency: Very common

Frequent in

Science

60%

Encyclopedias

15%

News & Media

12%

Less common in

Academia

8%

Wiki

5%

Formal & Business

0%

Ludwig's WRAP-UP

The phrase "rotation period" is a common and grammatically correct noun phrase, predominantly used in scientific, encyclopedic, and news contexts to denote the time it takes for an object to complete one full rotation. As highlighted by Ludwig, the term's usage spans from astronomical bodies to forestry management, emphasizing its broad applicability in quantifying cyclical durations. While synonyms such as "rotational duration" and "spin rate" exist, it's important to distinguish "rotation period" from related concepts like orbital period. Awareness of the formal and scientific register of "rotation period" ensures its appropriate use in technical and academic discourse.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

rotational duration

Focuses on the length of the rotation.

spin rate

Refers to the speed of rotation.

cycle of rotation

Emphasizes the rotational cycle.

spin cycle time

Implies a cyclical rotation.

revolution time

Highlights the time it takes to complete a revolution.

orbital spin rate

Highlights the rate at which an object spins in its orbit.

periodic rotation

Stresses the regular and recurring nature of the rotation.

period of revolution

Emphasizes the complete cycle of rotation.

rotational interval

Highlights the interval of rotational motion.

turning cycle

Describes the complete turning motion.

FAQs

How is the "rotation period" of a planet determined?

The "rotation period" of a planet can be determined through various methods, including observing surface features, measuring radio emissions, or analyzing light curves. Spacecraft observations provide the most accurate measurements.

What factors can affect the "rotation period" of a celestial object?

Factors such as tidal forces, collisions with other objects, and internal mass distribution can affect the "rotation period" of a celestial object. These influences can cause changes over long periods.

Is "rotation period" the same as a day?

The "rotation period" is related to the length of a day, but they are not always the same. A sidereal day is the time it takes a planet to rotate 360 degrees relative to distant stars, while a solar day is the time it takes for the Sun to appear in the same position in the sky.

What is a typical "rotation period" for an asteroid?

Asteroid "rotation periods" can vary widely, from a few hours to several weeks. Factors like size, shape, and composition influence their rotation rates. For instance, Ida's "rotation period" is relatively fast at 4.63 hours.