Nicholas Danne
University of South Carolina
Reflectance physicalists define reflectance as the intrinsic disposition of a surface to reflect finite-duration light pulses at a given efficiency per wavelength. I criticize the received view of dispositional reflectance (David R. Hilbert’s) for failing to account for what I call “harmonic dispersion,” the inverse relationship of a light pulse's duration to its bandwidth. I argue that harmonic dispersion renders reflectance defined in terms of light pulses an extrinsic disposition. Reflectance defined as the per-wavelength efficiency to reflect the superimposed, infinite-duration, Fourier harmonics of pulses can be an intrinsic disposition of surfaces. This conclusion raises questions about mathematical realism, about which I nevertheless remain neutral.
Keywords Fourier analysis  surface spectral reflectance  color perception  dispositional realism  intrinsic properties  extrinsic properties
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DOI 10.1016/j.shpsb.2020.01.002
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References found in this work BETA

Color Realism and Color Science.Alex Byrne & David R. Hilbert - 2003 - Behavioral and Brain Sciences 26 (1):3-21.
On the Explanatory Role of Mathematics in Empirical Science.Robert W. Batterman - 2010 - British Journal for the Philosophy of Science 61 (1):1-25.

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Citations of this work BETA

An Extra-Mathematical Program Explanation of Color Experience.Nicholas Danne - forthcoming - International Studies in the Philosophy of Science:1-21.

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