Which optical consequence primarily arises during a solar eclipse viewed through early Islamic pinhole cameras ('camera obscura')?

💡 Explanation

As sunlight passes through the pinhole, rectilinear propagation of light rays causes an inverted image on the viewing plane within the camera obscura box because rays from the top of the sun project to the bottom of the image and vice versa. Therefore image inversion results, rather than blurring, distortion, or intensity reduction which depend on wave properties or refractive components absent in basic forms.

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