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The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different names for the electromagnetic waves within each band.
The wavelength of visible light ranges from deep red, roughly 700 nm, to violet, roughly 400 nm (for other examples, see electromagnetic spectrum). For sound waves in air, the speed of sound is 343 m/s (at room temperature and atmospheric pressure ).
Key Points. The lowest frequency portion of the electromagnetic spectrum is designated as “radio,” generally considered to have wavelengths within 1 millimeter to 100 kilometers or frequencies within 300 GHz to 3 kHz. There is a wide range of subcategories contained within radio including AM and FM radio.
9 wrz 2024 · electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. Although all electromagnetic waves travel at the speed of light in a vacuum, they do so at a wide range of frequencies, wavelengths, and photon energies.
The wavelength range is from about 1 millimeter down to 750 nm. The range adjacent to the visible spectrum is called the "near infrared" and the longer wavelength part is called "far infrared". In interactions with matter , infrared primarily acts to set molecules into vibration.
Electromagnetic waves span a spectrum that ranges from long wavelength, low frequency radio waves to short wavelength, high frequency gamma rays.
2 maj 2024 · The visible light spectrum, measured in wavelengths, is the range of electromagnetic radiation we can see. It is outlined in color spectrum charts.
