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.