Incidentally, Wien's law (that Hotwire misspelled) only applies to blackbody radiation. Therefore, it can only be applied to an incandescent bulb but it cannot be applied to a fluorescent light. Hotwire's correlations between the "temperature" of a fluorescent light and the wavelenght are incorrect.
https://en.wikipedia.org/wiki/Wien_approximation
https://en.wikipedia.org/wiki/Color_temperature