Beispiel: Gelbes Licht (600 nm)

Lichtgeschwindigkeit

${\displaystyle c=299792.458~{\frac {km}{s}}\approx 3*10^{8}~{\frac {m}{s}}}$

Wellenlänge

${\displaystyle \lambda =600~nm=6*10^{-7}~m}$

Frequenz

${\displaystyle f={\frac {c}{\lambda }}\approx {\frac {3*10^{8}~{\frac {m}{s}}}{6*10^{-7}~m}}}$

${\displaystyle f\approx 5*10^{14}~{\frac {\color {Red}\not {\color {Black}m}}{s\color {Red}\not {\color {Black}m}}}=5*10^{14}~{\frac {1}{s}}=5*10^{14}Hz}$

${\displaystyle f\approx 500~THz=0.5~Mio~GHz}$