I decided to do a little Googling and came up with this website:
http://www.npr.org/2014/01/28/267185...s-faq-can-help
Some of the comments about the color spectrum of newer lights is very interesting, but I am finding all of this terribly complicated! At least now I understand the wattage thing. Seems like the pros are pushing getting the same lumination (citing savings in electricity because of lower wattage) more than anything, but for me it's invaluable to find out I can get more illumination from a 60-watt fixture than was previously possible. Dh and I were looking at lamps recently, and he was complaining that they were all 60-watt lamps!