ABSTRACT
As illustrated in Figure 10.1, a monochromatic wave is characterized by its period T (in421 s), or equivalently by its frequency of oscillation ν (in Hz)
ν , 1 T
(10.5)
or its angular frequency (in rd·s−1)
ω , 2piν = 2pi T
(10.6)
As it corresponds to the spectral sensitivity of the human eye, the subset of the electromag-678 netic spectrum ranging roughly between 383 THz and 783 THz in frequency, or between 783 nm and 383 nm in wavelength, is then referred to as visible light.