Electromagnetic radiation wavenumber

Thus, for electromagnetic radiation of frequency, V, the wavelength in vacuum is longer than in other media. Another unit used to describe the wave properties of electromagnetic radiation is the wavenumber, V, which is the reciprocal of wavelength... 

A graph of a sample s absorbance of electromagnetic radiation versus wavelength (or frequency or wavenumber). 

In a vacuum all electromagnetic radiation travels at the same speed, the speed of light c, and may be characterized by its wavelength X, in air or vacuum, or by its wavenumber v or frequency v, both conventionally in a vacuum, where... 

An issue that is still only just being resolved concerns the use of the word wavenumber . Whereas the frequency v of electromagnetic radiation is related to the wavelength X by... 

The Electromagnetic Spectrum. Electromagnetic radiation is characterized by its wavelength, L, frequency, v, or wavenumber, i), which are related by equation 2 ... 

Calculate the energy of electromagnetic radiation, and convert from wavelength to wavenumber and vice versa. 

The different types of outer shell electronic transitions that occur by absorption or emission of electromagnetic radiation in the UV, Visible and Near IR spectral regions are summarized in Figure 2.1. Since the electronic spectra can be plotted as a function of wavelength (nm), wavenumber (cm" ) or energy (eV), the conversion factors between the various units are reported in Table 2.1. 

Wavenumber (Section 13.5A) A unit for the frequency of electromagnetic radiation that is inversely proportional to wavelength. Wavenumber, reported in reciprocal centimeters (cm ), is used for frequency in IR spectroscopy. 

The wavenumber v in cm (Kayser) is most often used to describe radiation in the infrared region. The most useful part of the infrared spectrum for the detection and determination of organic species is 2.5 to 15 n.m, which corresponds to a wavenumber range of 4000 to 667 cm" . The wavenumber of a beam of electromagnetic radiation is directly proportional to its energy and thus its frequency. 

Wavenumber ( ) is another way to describe the frequency of electromagnetic radiation, and the one most often used in infrared spectroscopy. It is the number of waves in one centimeter, so it has units of reciprocal centimeters (cm ). Scientists use wavenumbers in preference to wavelengths because, unlike wavelengths, wavenumbers are directly proportional to energy. The relationship between wavenumber (in cm ) and wavelength (in m) is given by the equation... 

---