từ thiên kế

A student uses a từ thiên kế to measure the angle of a magnetic field.

Definition

1. Noun:
   • Declinometer: A scientific instrument used to measure the angle of magnetic declination, which is the difference between magnetic north and true north at a given location.

Usage Examples

• Noun:
  • Nhà địa chất sử dụng từ thiên kế để đo chính xác độ lệch từ trường. (The geologist used a declinometer to accurately measure the magnetic declination.)
  • Từ thiên kế là một công cụ quan trọng trong việc lập bản đồ và hàng hải. (The declinometer is an important tool in cartography and navigation.)

Advanced Usage

• This term is highly specialized and is primarily used in technical fields such as geophysics, surveying, and navigation. It is not used in everyday conversation.

Variants and Related Words

• La bàn (n): Compass. A more common instrument for direction-finding that is related to but distinct from a declinometer.
• Độ từ thiên (n): Magnetic declination. This is the specific angle that a measures.

Synonyms

• Declinometer: The direct and most accurate English equivalent.
• Magnetic declinometer: A more descriptive synonym.

Related Terms

• Từ trường (n): Magnetic field.
• Cực từ (n): Magnetic pole.