magnetic declination

From 1893 daily observations of the magnetic declination were made at the observatory.

The magnetic declination may be read from a compass attached to the base plate.

You'll have to take magnetic declination into account if you are trying to navigate with reasonable precision.

An agonic line is drawn through points of zero magnetic declination.

Magnetic declination varies both from place to place and with the passage of time.

These artifacts of occupation can yield the magnetic declination from the last time they were fired or used.

He showed that in the past half century, magnetic declination in London had shifted by seven degrees.

Magnetic declination has been measured in many countries, including the U.S.

This is called magnetic declination: the angle formed by the compass needle with the line pointing to true north.

The reason for the change in magnetic declination and magnetic dip was a mystery.

Using a compass in Greenland involves accounting for a very extreme magnetic declination.

Instruments to measure magnetic declination arrived in 1892.

He also made meteorological observations and measurements of the magnetic declination at Batavia.

An Isogonal is also the name for a line connecting points at which the magnetic declination is the same.

The local magnetic declination is given on most maps, to allow the map to be oriented with a compass parallel to true north.

Over such a time scale, magnetic declination is observed to vary over tens of degrees.

It would also account for the existence of magnetic declination if the magnetic mountain were not precisely at the north pole.

Most charts include a compass rose depicting the Magnetic declination between magnetic and true north.

The local angular difference between magnetic north and true north is called the magnetic declination.

"This map shows the magnetic declination.

Note that north here is true north, so magnetic orientation must be corrected for magnetic declination.

Legend 5 The prime meridian and how a logical choice could be made on the basis of a study of magnetic declination.

The lowercase Greek letter δ (delta) is frequently used as the symbol for magnetic declination.

He discovered that magnetic declination - the angle of dip of a compass needle - is not constant but changes over time.

Shen Kuo was the first to discern magnetic declination of true north while experimenting with a compass.