@book{Sorensen2008-SORSDT,year = {2008},title = {Seeing Dark Things: The Philosophy of Shadows},author = {Roy A. Sorensen},abstract = {The eclipse riddle -- Seeing surfaces -- The disappearing act -- Spinning shadows -- Berkeley's shadow -- Para-reflections -- Para-refractions : shadowgrams and the black drop -- Goethe's colored shadows -- Filtows -- Holes in the light -- Black and blue -- Seeing in black and white -- We see in the dark -- Hearing silence.},publisher = {Oxford University Press}}@