Understanding the Relationship
* Speed of light (c): This is a constant value, approximately 299,792,458 meters per second (m/s).
* Wavelength (λ): The distance between two consecutive crests or troughs of a wave. In this case, it's 780 nm (nanometers), which is 780 x 10^-9 meters.
* Frequency (f): The number of wave cycles passing a fixed point in one second.
The Formula
The relationship between these three is:
* c = λf
Calculation
1. Rearrange the formula to solve for frequency:
f = c / λ
2. Plug in the values:
f = (299,792,458 m/s) / (780 x 10^-9 m)
3. Calculate:
f ≈ 3.84 x 10^14 Hz (Hertz)
Therefore, the frequency of light with a wavelength of 780 nm is approximately 3.84 x 10^14 Hz.
