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Ackbar
What is the wavelength of an electromagnetic wave with frequency 300 EHz?
frequency is the speed of light divide my wavelength: \[f=c/\lambda\]
I have here that 1 EHz is \[10^18\] hz
and \[c=300,000 km/s\]
speed= frequency times lembda.....for electromagnetic waves speed is the light's speed that is 299792458 m/s