1. The problem statement, all variables and given/known data I took 2 spectra (measuring intensity) of a blank cuvette with a spectrometer. The first time (a) I did not put a black cloth on top of cuvette/spectrometer. The second time (b) I did put a black cloth on the system. The baseline of (b) was notably higher than the baseline of (a). Shouldn't it be the other way around since having a black cloth stops stray light from entering the system, which should decrease intensity?