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Dr. Faraday and Dr. Leit from the Eyes Have It - Michael Faraday was a famous scientist (Faraday Effect) with 2 units of electricity named after him, the farad and the faraday. Leit, sounds like light.
Well, there is a Dr. Light in the comics. More than one, if I remember correctly.

I can't help but wonder if Dr. Gretchen Kell(e?)y is named after a famous character in Goethe's Faust.

The only known quantity that moves faster than
light is the office grapevine. (from Nan's fabulous Home series)