Sections
Key Terms
Key Terms
- electric field
- a field that tells us the force per unit charge at all locations in space around a charge distribution
- electromagnetic radiation (EMR)
- radiant energy that consists of oscillating electric and magnetic fields
- illuminance
- number of lumens per square meter, given in units of lux (lx)
- interference
- increased or decreased light intensity caused by the phase differences between waves
- lumens
- unit of measure for luminous flux
- luminous flux
- rate at which light is radiated from a source
- lux
- unit of measure for illuminance
- magnetic field
- the directional lines around a magnetic material that indicates the direction and magnitude of the magnetic force
- Maxwell’s equations
- equations that describe the interrelationship between electric and magnetic fields, and how these fields combine to form electromagnetic radiation
- polarized light
- light whose electric field component vibrates in a specific plane