continuous wave: meaning, definition, pronunciation and examples
C2Technical/Specialized
Quick answer
What does “continuous wave” mean?
A radio wave or other electromagnetic wave whose amplitude and frequency remain constant over time, as opposed to a pulsed or modulated wave.
Audio
Pronunciation
Definition
Meaning and Definition
A radio wave or other electromagnetic wave whose amplitude and frequency remain constant over time, as opposed to a pulsed or modulated wave.
In broader technical contexts, any uninterrupted, steady-state oscillation or signal that persists without interruption. In medicine, it can refer to a type of laser emission. In historical contexts, it refers to early radio transmission technology.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Pronunciation differences follow general BrE/AmE patterns for the constituent words.
Connotations
Identical technical connotations. In amateur radio communities globally, 'CW' is strongly associated with Morse code transmission using a continuous wave signal.
Frequency
Equally low-frequency in general discourse, but standard and high-frequency within specific technical fields like RF engineering, physics, and amateur radio.
Grammar
How to Use “continuous wave” in a Sentence
The [device] emits a continuous wave.A continuous wave is used for [purpose].[Subject] operates in continuous wave mode.Vocabulary
Collocations
Examples
Examples of “continuous wave” in a Sentence
verb
British English
- The transmitter was continuous-waving for hours.
- They needed to continuous-wave the signal for calibration.
American English
- The device continuous-waves at 5 MHz.
- We'll continuous-wave the output for the test.
adverb
British English
- The laser operates continuous-wave.
- The signal was broadcast continuous-wave.
American English
- The transmitter runs continuous-wave.
- It functions continuous-wave for simplicity.
adjective
British English
- The continuous-wave transmission was crystal clear.
- They used a continuous-wave laser for the surgery.
American English
- The continuous-wave radar system is more precise.
- Adjust the continuous-wave output power.
Usage
Meaning in Context
Business
Rare, except in specific industries like telecoms or laser manufacturing.
Academic
Common in physics, engineering, and telecommunications papers and textbooks.
Everyday
Virtually never used in everyday conversation.
Technical
Core term in radio frequency (RF) engineering, laser physics, radar systems, and medical laser technology.
Vocabulary
Synonyms of “continuous wave”
Strong
Neutral
Weak
Vocabulary
Antonyms of “continuous wave”
Watch out
Common Mistakes When Using “continuous wave”
- Using 'continuous' instead of 'continual' (which implies intervals) is not a mistake here, as 'continuous' is technically correct. A common error is mispronouncing 'wave' as /wæv/ instead of /weɪv/. Pluralizing as 'continuous waves' when referring to the general concept is fine.
FAQ
Frequently Asked Questions
Not exactly. A continuous wave is defined by its constant, unmodulated state. A sine wave is a specific smooth, periodic oscillation. A continuous wave can be a sine wave, but it could also be a square or other waveform, as long as it is unmodulated and constant.
It was the basis of early radio transmission, especially for Morse code (CW). Its simplicity makes it easy to generate, detect, and it occupies a very narrow bandwidth, allowing many signals to coexist with minimal interference.
Yes. A continuous wave (CW) laser emits a constant, steady beam of light, as opposed to a pulsed laser which emits light in short bursts. CW lasers are used in applications like cutting, welding, and surgery.
In amateur radio, 'CW' almost universally refers to Morse code communication using a continuous wave carrier. Operators often say they are 'working CW' meaning they are using Morse code.
A radio wave or other electromagnetic wave whose amplitude and frequency remain constant over time, as opposed to a pulsed or modulated wave.
Continuous wave is usually technical/specialized in register.
Continuous wave: in British English it is pronounced /kənˌtɪn.ju.əs ˈweɪv/, and in American English it is pronounced /kənˈtɪn.ju.əs ˈweɪv/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Not applicable for this technical term.”
Learning
Memory Aids
Mnemonic
Think of a continuous wave like a singer holding one unwavering note, compared to a pulsed wave which would be like tapping a drum.
Conceptual Metaphor
A never-ending, perfectly flat road (for amplitude) or a single, sustained musical note (for constancy).
Practice
Quiz
What is the primary characteristic of a continuous wave?