Which optical attribute was methodically studied using Alhazen's camera obscura, advancing understanding of vision?

💡 Explanation

Alhazen’s experiments focused on demonstrating rectilinear propagation of light through the small aperture forming an inverted image due to straight path of light. Therefore ‘light propagation’ is correct, rather than other phenomena, as binocularity, diffraction and wavelength are more advanced optical principles not directly explored at this early research stage.

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