Terms
Electromagnetic Spectrum:
the range of wavelengths or frequencies over which electromagnetic radiation extends.
the range of wavelengths or frequencies over which electromagnetic radiation extends.
Electromagnetic Wave:
waves are waves which can travel through the vacuum of outer space. Mechanical waves, unlike electromagnetic waves, require the presence of a material medium in order to transport their energy from one location to another.
waves are waves which can travel through the vacuum of outer space. Mechanical waves, unlike electromagnetic waves, require the presence of a material medium in order to transport their energy from one location to another.
Infrared: (of electromagnetic radiation) having a wavelength just greater than that of the red end of the visible light spectrum but less than that of microwaves. Infrared radiation has a wavelength from about 800 nm to 1 mm, and is emitted particularly by heated objects.
Light year: a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles).
polarization: Polarization is a concept that comes from science, and it involves light, radiation, or magnetism moving in specific directions. Outside science, polarization usually refers to how people think, especially when two views emerge that drive people apart, kind of like two opposing magnets.
Ray: a straight narrow beam of light from the sun or moon
Ultraviolet: ultraviolet radiation, that portion of the electromagnetic spectrum extending from the violet, or short-wavelength, end of the visible light range to the X-ray region
Speed of light: The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its value is exactly 299,792,458 metres per second, a figure that is exact because the length of the metre is defined from this constant and the international standard for time.