dehammer wrote:
"as someone that studied lasers in college, we never spelled it out as 'speed of light', we always said 'light'."

Then you were wrong and still are. Demonstrate some integrity and acknowledge it. Funny ... you studied them ... in the 1960's I was building them. I still have two gallium arsenide phosphide, two helium-neon, and one CO2 in my lab.

DA Morgan