Maxwell combined them all and proposed a beautiful symmetry that was later confirmed by a clever experiment. Thus the end goal here is to obtain a wave equation. The wavelength of light usually measured in meters or Angstroems 1 A 10 -10 m f the frequency at which light waves pass by measured in units of per seconds 1s.
By the way the proof that lights speed was finite was published in 1676 and the first reliable measurements of the speed of light ones that were very close to the modern value took place in the late 1850s.
The very formula of the speed of light resembles the laws of mechanics from physics or rather determining the distance using the time and speed of an object. D 750 ms600 s d 4500 m. Formulas on Refraction of Light Refractive Index mufractextspeed of light in vacuumtextspeed of light in mediumfraccv Laws of Refraction. C the speed of light 300000 kms or 30 x 10 8 ms.