Assertion: magnetic field | /r/HasProperty | important
Facets:
value: in electromagnetism.[citation
type: OTHER
value: in navigation
type: OTHER
value: in communication systems
type: LOCATION
Source sentences:
text: The Earth produces its own magnetic field, which shields the Earth's ozone layer from the solar wind and is important in navigation using a compass.
text: While the magnetic flux through a closed surface is always zero, the magnetic flux through an open surface need not be zero and is an important quantity in electromagnetism.[citation needed]
text: The Earth produces its own magnetic field, which is important in navigation.
text: Magnetic fields are also important in communication systems.
text: While the magnetic flux through a closed surface is always zero, the magnetic flux through an open surface need not be zero and is an important quantity in electromagnetism.[citation needed]