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You're right to a degree. If you consider only one of the cells of the grid, there is less source light available to be projected onto the target — the target "sees" a much smaller part of the light source through each of the cells if the cell diameter is smaller. At the same time, though, you are increasing the number of cells visible at the centre of the ...

Yes, with the black straws, it is going to absorb most of the light that does not go directly through the straws. The smaller in diameter the straws, the more direct the light has to be traveling to get through and the more light will be absorbed. If the straws were white, it would actually get brighter as the reflected light would be more focused, but it ...