B. the important scene where the well measured part was done for the output power.
Here is the important scene where it is obvious that the radiant intensity of the QX is much less than that from the reflection off of the projector screen, even when the light sensor is pointed away from it.
The QX blackbody with a peak at around 1100 nm is nowhere to be seen. The near blackbody halogen light spectra is well-captured on several occasions, and is especially clear when the lights are turned back on. (The lights are not boiling the audience with their Wiens Law ~5600 C glare)
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