What information? What spectrum? The color information received by the webcam is the total intensity of light when passed through a red filter, the total intensity when passed through a blue filter, and the total intensity when passed through a green filter, at each point. You do not know the frequency of these filters (or that frequency of light is even a thing). I’m sure you could deduce something by playing around with relative intensities and chromatic aberration, but ultimately you cannot build a spectrum with three points.
I don’t think we disagree here. Getting a spectrum from an RGB image seems tough and so the problem of deriving physics from an RGB image alone seems substantially harder than if you’re provided an RGB image + spectrograph.
Indeed! Deriving physics requires a number of different experiments specialized to the discovery of each component. I could see how a spectrograph plus an analysis of the bending of light could get you a guess that light is quantised via the ultraviolet catastrophe, although i’m doubtful this is the only way to get the equation describing the black body curve. I think you’d need more information like the energy transitions of atoms or maxwells equations to get all the way to quantum mechanics proper though. I don’t think this would get you to gravity either, as quantum physics and general relativity are famously incompatible on a fundamental level.
I don’t think we disagree here. Getting a spectrum from an RGB image seems tough and so the problem of deriving physics from an RGB image alone seems substantially harder than if you’re provided an RGB image + spectrograph.
Indeed! Deriving physics requires a number of different experiments specialized to the discovery of each component. I could see how a spectrograph plus an analysis of the bending of light could get you a guess that light is quantised via the ultraviolet catastrophe, although i’m doubtful this is the only way to get the equation describing the black body curve. I think you’d need more information like the energy transitions of atoms or maxwells equations to get all the way to quantum mechanics proper though. I don’t think this would get you to gravity either, as quantum physics and general relativity are famously incompatible on a fundamental level.