You can't get more direct than this in terms of proving that photons exist!
The particular case of the double-slit experiment will be discussed at: single particle double slit experiment.
- Photon | 124, 2k, 50
- Elementary particle | 0, 3k, 58
- Subatomic particle | 0, 3k, 60
- Standard Model | 92, 3k, 66
- Particle physics | 135, 24k, 383
- Physics | 276, 33k, 581
- Natural science | 0, 41k, 934
- Science | 0, 45k, 1k
- Ciro Santilli's Homepage | 238, 163k, 3k
- Fluorometer | 29
- Photomultiplier tube | 56
- Photon | 124, 2k, 50
- Photonics equipment | 27, 256, 5
- Single particle double slit experiment | 335
- Spontaneous parametric down-conversion | 378
- Xanadu | 51