Definition

Noun: - The vector sum of all the forces exerted by an electrical or magnetic field (on a unit mass or unit charge or unit magnetic pole) at a given point in the field: This is a precise scientific term describing the strength and direction of a field's influence at a specific location. It quantifies the force a field would exert on a standard test object placed at that point.

Usage

• Field intensity is a fundamental concept in physics, used to describe and calculate the effects of electric fields, magnetic fields, and gravitational fields.
• It is a vector quantity, meaning it has both magnitude (strength) and direction.
• The term is typically used in technical, academic, and engineering contexts.

Examples

• The field intensity around the magnet was strongest at its poles.
• To design the capacitor, engineers calculated the electric field intensity between the plates.
• A measurement of the gravitational field intensity can help map variations in the Earth's density.

Advanced Usage

• Field intensity is often synonymous with field strength in many physics contexts, though "intensity" can sometimes imply a vector description while "strength" may refer to its magnitude.
• It is a key parameter in equations such as Coulomb's law (for electric fields) and the law of universal gravitation.

Variants and Related Words

• Field strength (n): Often used interchangeably with field intensity, particularly when discussing the magnitude of the field.
• Electric field intensity (n): The force per unit charge exerted by an electric field.
• Magnetic field intensity (H) (n): A measure of the magnetizing force within a material, related to the magnetic field.
• Magnetic flux density (B) (n): A related but distinct measure of the magnetic field's strength, accounting for the material's response.

Synonyms

• Field strength
• Field force

Related Phrases

• Intensity of the field: A less common phrasing with the same meaning.
• Point in the field: A specific location where the field intensity is measured or defined.

Noun

1. the vector sum of all the forces exerted by an electrical or magnetic field (on a unit mass or unit charge or unit magnetic pole) at a given point in the field