Thanks for the illuminating info, Dan. I wonder how many of us scurried
to the dictionary hoping to refute you, but failed. Best I can do is
suggest that he might be asking about turning an "electric bulb".

Happy New Year. ... or should that correctly be 'Next Year'?

LOL! I get corrected everytime I got to the industrial supply house to by
Metal Halide 'lamps' for the 'lights' at work.