UV-Visible Spectroscopy This link contains a calculator converting frequency, wavelength and energy values. Also covered are:
Visible and Ultraviolet Spectroscopy 1. Background 2. The Electromagnetic Spectrum 3. UV-Visible Absorption Spectra 4. The Importance of Conjugation
| Name | Frequency (Hz) | Photon Energy (eV) | |
| Gamma ray | less than 0.01 nm | more than 10 EHZ | 100 keV - 300+ GeV |
| X-Ray | 0.01 to 10 nm | 30 PHz - 30 EHZ | 120 eV to 120 keV |
| Ultraviolet | 10 nm - 400 nm | 30 EHZ - 790 THz | 3 eV to 124 eV |
| Visible | 390 nm - 750 nm | 790 THz - 405 THz | 1.7 eV - 3.3 eV |
| Infrared | 750 nm - 1 mm | 405 THz - 300 GHz | 1.24 meV - 1.7 eV |
| Microwave | 1 mm - 1 meter | 300 GHz - 300 MHz | 1.24 meV - 1.24 µeV |
| Radio | 1 mm - km | 300 GHz - 3 Hz | 1.24 meV - 12.4 feV |
12.23 - Time orbit period 12.24 - Time spin period 9.32 - Time 9.33 - Time Intervals Color Frequency Light Time Wavelength