Observation come first, explanation is secondary.
All of their books follow the spirit of Professor Minnaert's book where he shows himself at heart as a naturalist. The books are arranged in order of their relevance to the phenomena we consider in this workshop. The books cover much more than we can even touch on. Both Bohren's books are a mixture of the thermodynamics of water and of optics. Activity oriented learning on these subjects is covered in Physics by Inquiry , Vols.