The De Broglie equation, which describes the wave-like nature of particles, does apply to black holes, although the resulting wavelength is negligible in practical terms. The discussion suggests that if black holes could be observed over an extremely long timescale, they might produce interference patterns similar to those seen in double slit experiments, though this is not a significant consideration. There is debate about whether space-time flows or if matter and photons move within it, with differing views on the implications of black holes on space-time dynamics. The conversation also touches on the potential for reversing the photoelectric effect in relation to black holes and antimatter. Overall, the complexities of quantum mechanics and general relativity in the context of black holes present intriguing theoretical possibilities.