ferrel's law: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “ferrel's law” mean?
A principle in meteorology and oceanography describing the deflection of moving air or water masses to the right in the Northern Hemisphere and to the left in the Southern Hemisphere due to the Earth's rotation.
Audio
Pronunciation
Definition
Meaning and Definition
A principle in meteorology and oceanography describing the deflection of moving air or water masses to the right in the Northern Hemisphere and to the left in the Southern Hemisphere due to the Earth's rotation.
The observed effect of the Coriolis force on large-scale atmospheric and oceanic circulation patterns, influencing wind systems, ocean currents, and weather phenomena.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling of 'Ferrel's' is consistent.
Connotations
Purely technical/scientific term in both varieties.
Frequency
Equally rare in both UK and US English, confined to specialised academic and meteorological contexts.
Grammar
How to Use “ferrel's law” in a Sentence
[Subject] obeys Ferrel's law.Ferrel's law explains [phenomenon].[Phenomenon] is a consequence of Ferrel's law.Vocabulary
Collocations
Examples
Examples of “ferrel's law” in a Sentence
adjective
British English
- Ferrel-law deflection
- Ferrel-law dynamics
American English
- Ferrel-law deflection
- Ferrel-law dynamics
Usage
Meaning in Context
Business
Not used.
Academic
Used in meteorology, oceanography, physics, and geography courses and literature.
Everyday
Virtually never used in everyday conversation.
Technical
Core term in geophysical fluid dynamics and synoptic meteorology.
Vocabulary
Synonyms of “ferrel's law”
Neutral
Weak
Vocabulary
Antonyms of “ferrel's law”
Watch out
Common Mistakes When Using “ferrel's law”
- Misspelling as 'Ferrell's law'.
- Confusing it with the entirely separate 'Buys Ballot's law'.
- Applying it to small-scale phenomena like water draining from a sink (the effect is negligible at that scale).
FAQ
Frequently Asked Questions
Ferrel's law is a specific application or description of the Coriolis effect to atmospheric and oceanic circulation. They are closely related but not identical; the Coriolis effect is the general physical principle, while Ferrel's law is its geophysical formulation.
William Ferrel (1817–1891) was an American meteorologist who developed theories on atmospheric circulation, including the mid-latitude circulation cell and the deflection law named after him.
No. The scale is far too small for the Earth's rotation to have a measurable effect. The direction is determined by the basin's shape and initial water motion.
It is a fundamental concept in meteorology (for understanding wind patterns and storm systems) and oceanography (for modelling ocean currents and their influence on climate).
A principle in meteorology and oceanography describing the deflection of moving air or water masses to the right in the Northern Hemisphere and to the left in the Southern Hemisphere due to the Earth's rotation.
Ferrel's law is usually technical/scientific in register.
Ferrel's law: in British English it is pronounced /ˈfɛrəlz lɔː/, and in American English it is pronounced /ˈfɛrəlz lɔːr/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Ferrel's law makes winds and currents SWERVE: Southern hemisphere left, Northern hemisphere Right, Earth's rotation is the VERve.
Conceptual Metaphor
THE EARTH'S ROTATION IS A FORCE THAT PUSHES MOVING OBJECTS SIDEWAYS.
Practice
Quiz
Ferrel's law primarily describes the deflection of moving fluids caused by: