λ=cf{\displaystyle \lambda ={\frac {c}{f}}}
Lichtgeschwindigkeit
c=299792.458 kms≈3∗108 ms{\displaystyle c=299792.458~{\frac {km}{s}}\approx 3*10^{8}~{\frac {m}{s}}}
Wellenlänge
λ=600 nm=6∗10−7 m{\displaystyle \lambda =600~nm=6*10^{-7}~m}
Frequenz
f=cλ≈3∗108 ms6∗10−7 m{\displaystyle f={\frac {c}{\lambda }}\approx {\frac {3*10^{8}~{\frac {m}{s}}}{6*10^{-7}~m}}}
f≈5∗1014 ⧸ms⧸m=5∗1014 1s=5∗1014Hz{\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}
f≈500 THz=0.5 Mio GHz{\displaystyle f\approx 500~THz=0.5~Mio~GHz}