Electromagnetic Spectrum - The range of electromagnetic waves extending from radio waves to gamma rays.
Electromagnetic Wave - A wave that is partly electric and partly magnetic and carries energy. Emitted by vibrating electric charges.
Infrared - Electromagnetic waves of frequencies lower than the red of visible light.
Light Year - The distance light travels through a vacuum during one year.
Polarization - The aligning of vibrations in a transverse wave, usually by filtering out waves of other directions.
Ray - A thin beam of light.
Ultraviolet - Electromagnetic waves of frequencies higher than those of violet light.
Speed of Light - Is a universal constant. Distance light travels in one year is called a light-year.
Speed of Light= extra distance traveled/ extra time measured
300,000 km/s
Speed of Light= extra distance traveled/ extra time measured
300,000 km/s