ISOGONIC LINE Meaning and
Definition
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An isogonic line is a term used in geography and cartography to describe a line on a map that connects points with equal magnetic declination or variation. Magnetic declination refers to the angular difference between true north (as determined by the Earth's axis) and magnetic north (as determined by the magnetic field of the Earth). Since the Earth's magnetic field is not uniform, the magnetic declination varies from place to place.
Isogonic lines are drawn on maps as curved or straight lines, representing areas with equal magnetic declination at a given time. These lines help navigators and surveyors determine the difference between true north and magnetic north, aiding in the accurate reading of compasses and the adjustment of magnetic bearings.
Isogonic lines are typically indicated on maps using a symbol called an isogonic line, which consists of a line with small arrows showing its direction. The symbols are usually labeled with the declination value at that specific geographic point.
It is important to note that the positions of isogonic lines change over time due to the constant changes in the Earth's magnetic field. Therefore, maps that depict isogonic lines must be regularly updated to reflect the most current data.
Common Misspellings for ISOGONIC LINE
- usogonic line
- jsogonic line
- ksogonic line
- osogonic line
- 9sogonic line
- 8sogonic line
- iaogonic line
- izogonic line
- ixogonic line
- idogonic line
- ieogonic line
- iwogonic line
- isigonic line
- iskgonic line
- islgonic line
- ispgonic line
- is0gonic line
- is9gonic line
- isofonic line
Etymology of ISOGONIC LINE
The word "isogonic" is derived from the combination of two Greek words: "isos" meaning equal and "gonia" meaning angle. The term "isogonic line" refers to a line on a map that connects points of equal magnetic declination, or the angle between magnetic north and true north. The etymology of "isogonic line" can be described as follows:
1. Isogonic: "Iso-" means equal or same, and "-gonic" refers to angle or corner. The term isogonic is derived from the Greek word "isos" meaning equal and "gonia" meaning angle.
2. Line: The word "line" comes from the Old English word "līne", which means a rope or cord used for measuring or marking.
Similar spelling word for ISOGONIC LINE
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