Here you can see how this chart is currently presented on the Wikipedia website. They completely overlook Max Planck’s contribution and the editor’s of this page, when updated to include Max Planck’s data, deleted it.  One can only imagine that they couldn’t believe the information or our summary of it (just below), so deleted it, too.

In 1899 Max Planck defined Planck Time as the unit of time (in a system of natural units or “Planck units”) whereby light travels the distance of one (1) Planck length in a vacuum. The calculation, Planck Length divided by Planck time is equal to 299,792,422.79 meters/second.

(Click on this image to go to it on Wikipedia’s website.)

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