Electromagnetic Waves
Define Electric Field.
a field in a region of space that exerts electric forces on charged particles, a field produced by electric charges or by changing magnetic fields.
Define Electromagnetic Spectrum.
the full range of electromagnetic radiation
Materials can be called what?
transparent, translucent, or opaque.
Primary colors of pigments are?
cyan, yellow, and magenta.
Define Electromagnetic Waves.
waves travel through a vacuum, or empty space, as well as through matter.
Define Amplitude Modulation.
a method of transmitting a radio signal in which the amplitude of the carrier wave varies while its frequency remains the same.
Define Transparent.
a description of material that allows most of the light that strikes it to pass through.
Define Secondary Colors.
new color that results when any two of the primary colors combined
Define Magnetic Field.
a field in a region of space that exerts on a magnetic force, a field produced by magnets, by changing the electric fields or by moving charges.
Define Frequency Modulation.
a method of transmitting a radio signal in which frequency of the carrier wave varies while amplitude remains the same.
Define Translucent.
a description of material that scatters light that passes through it
Define Complementary colors of light.
any two of light that combines to form white light
the transfer of energy by electromagnetic waves.
Define Thermograms.
a color-coded picture using variations in infrared radiation to show variations in temperature.
Define Opaque.
a description of a material that either absorbs or reflects all of the light that strikes it so nothing can be seen through it
Define Pigment.
material that selectively absorbs certain colors of light and reflects other colors
Define Photons.
a packet of electromagnetic energy.
What does the electromagnetic spectrum include?
radio waves, infrared waves, visible light, ultraviolet rays, X-rays, and gamma rays.
Define Image.
a copy of an object formed by rejected or refracted rays of light
Define Complementary Colors of Pigment.
any two colors of pigments that combine to make black pigment