Electromagnetic spectrum | 合法醫療器材資訊網

4.1Radiowaves·4.2Microwaves·4.3Infraredradiation·4.4Visiblelight·4.5Ultravioletradiation·4.6X-rays·4.7Gammarays.

Entire range of frequencies of electromagnetic radiation

The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.

The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from below one hertz to above 1025 hertz, corresponding to wavelengths from thousands of kilometers down to a fraction of the size of an atomic nucleus. This frequency range is divided into separate bands, and the electromagnetic waves within each frequency band are called by different names; beginning at the low-frequency (long-wavelength) end of the spectrum these are: radio waves, microwaves, infrared, vi...