Max Planck: He has a rightful place within the continuum of development of an accurate definition of the speed of light. The chart below is from Wikipedia with a single line that has been added. Take Planck’s Length — 1.616255×10-35 meters — divided by Planck’s Time — 5.391247×10-44 seconds and you have 299,792.4228 kilometers per second.
He didn’t claim it, so we’ll shout it out for him. 
The chart above and the description that follows were both deleted by the Wikipedia editors responsible for this page.
