direction-finder
Definition
- Noun:
- A device for determining the direction of a signal: A "direction-finder" is an instrument used to ascertain the direction from which a radio signal or other wave is coming, typically for navigation or locating a source.
- A tool for orientation: In a broader sense, it refers to any apparatus that helps identify the bearing or orientation of an object or signal relative to the observer.
Usage Examples
- Noun:
- The ship's crew used a direction-finder to locate the distress beacon. (A device to determine the signal's direction.)
- Radio direction-finders are essential for aircraft navigation in poor visibility. (Instruments for orientation via radio waves.)
Advanced Usage
"to use a direction-finder": to operate the device to determine a signal's source.
- The rescue team used a direction-finder to pinpoint the hiker's location. (They employed the device to find the signal's origin.)
"direction-finder bearing": the specific angle or direction measured by the device.
- The direction-finder bearing indicated the signal came from the northeast. (The measured direction from the instrument.)
Variants and Related Words
Radio direction-finder (n): a specific type of direction-finder that uses radio waves.
- The radio direction-finder helped the submarine navigate underwater. (A device using radio signals for orientation.)
Direction-finding (adj): relating to the process of determining direction.
- Direction-finding equipment is crucial for search and rescue operations. (Equipment used for finding direction.)
Synonyms
- Radio compass: a device that determines direction by detecting radio signals.
- Bearing indicator: an instrument that shows the direction of a signal or object.
Related Idioms
- "Lost without a direction-finder": to be completely disoriented or unable to proceed without guidance.
- Without his compass, he felt lost without a direction-finder. (He felt helpless and disoriented.)