Definition

1. Noun:
   • A measuring instrument for determining the angle of magnetic dip: A "dip circle" is a scientific instrument used to measure the angle between the Earth's magnetic field lines and the horizontal plane at a specific location. This angle is known as the magnetic dip or inclination.

Usage

• The "dip circle" is a specialized tool used in geophysics and navigation.
• It is used to measure the magnetic dip, which varies depending on geographic location and is crucial for understanding the Earth's magnetic field.

Examples

• Noun:
  • The geophysicist used a dip circle to map the magnetic inclination across the region.
  • Accurate readings from the dip circle are essential for calibrating navigational systems.

Advanced Usage

• "To take a dip circle reading": The act of using the instrument to obtain a measurement.
  • Before the expedition, the team needed to take a precise dip circle reading at the base camp.

Variants and Related Words

• Inclinometer (n): Another term for an instrument that measures angles of slope, elevation, or depression. In geomagnetism, it is synonymous with a dip circle.
• Magnetic dip (n): The angle being measured, also called magnetic inclination.
• Dip needle (n): A simpler, related instrument that indicates magnetic dip.

Synonyms

• Inclinometer: An instrument for measuring angles of slope.
• Magnetometer: A broader category of instruments for measuring magnetic fields, which may include dip-measuring capability.

Related Terms

• Magnetic field (n): The region around a magnet where magnetic forces can be detected, which the dip circle helps analyze.
• Declination (n): The angle between magnetic north and true north, a different magnetic measurement often used alongside dip.

Noun

1. a measuring instrument for measuring the angle of magnetic dip (as from an airplane)