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No. In addition to the others, another link of interest might be on etendue: https://en.wikipedia.org/wiki/Etendue https://en.wikipedia.org/wiki/Etendue
by etendue 10y ago
No. In addition to the others, another link of interest might be on etendue: https://en.wikipedia.org/wiki/Etendue https://en.wikipedia.org/wiki/Etendue