This reading really got me thinking about the use of different kinds of lighting.  I am very new to the photography world and so I felt I learned a lot from this information about all the different types of light and light sources.  It is true that light is very mysterious, and I am glad that the book gave a very thorough explanation of the science of light.  Lighting is one of if not the most important aspects of solid photography, as I am noticing with my current night/day photos.  I especially enjoyed the part of the text where it talked about various sources of artificial lighting such as the projector.  It got me thinking of what else could possibly be used as an artificial light that I might have access to.