Incoming links: Davisson-Germer experiment
Early electron diffraction experiment from 1927 that drastically confirmed the matter wave hypothesis.
Schematic of the Davisson-Germer experiment
. Source. 
Here we list public domain academic papers. They must be public domain in the country of origin, not just the US, which had generally less stringent timings with the 95 year after publication rule rather than life + 70, which often ends up being publication + 110/120. Once these are reached, they may be upload to Wikimedia Commons!
- 2018
- Max Planck's works in Germany (1947 + 70)
- 2026
- Albert Einstein's works in Germany (1955 + 70)
- 2031:
- Max von Laue's works in Germany (1960 + 70)
- 1912: Interferenz-Erscheinungen bei Röntgenstrahlen (Interference phenomena in X-rays). Scan: archive.org/details/sitzungsberichte1912knig/page/n393/mode/2up. Clean upload: archive.org/details/interferenz-erscheinungen-bei-rontgenstrahlen
- Max von Laue's works in Germany (1960 + 70)
- 2032:
- 2042
- 1927: www.nature.com/articles/119558a0 The Scattering of Electrons by a Single Crystal of Nickel. (1971 + 70), Germer's death. Scan: archive.org/details/sim_nature-uk_1927-04-16_119_2998/page/554/mode/2up. Clean upload: archive.org/details/the-scattering-of-electrons-by-a-single-crystal-of-nickel. The Davisson-Germer experiment!
- 2049
- 1922 Stern-Gerlach experiment papers such as The experimental proof of directional quantization in the magnetic field. Stern died in 1969, Gerlach died in 1979, so 1979 + 70
- 2056
- 1961 Experimental Evidence for Quantized Flux in Superconducting Cylinders. Published in the US, so 1961 + 95.
Atoms exist and last for a long time, while in classical electromagnetic theory punctual orbiting electrons should emit radiation quickly and fall into the nucleus: physics.stackexchange.com/questions/20003/why-dont-electrons-crash-into-the-nuclei-they-orbit
In other sections:
- black-body radiation experiment
- Einstein solid experiments, which are analogous to black body radiation experiments
- emission spectrum
- electron diffraction experiments such as:
Bibliography:
- web.mit.edu/course/5/5.73/oldwww/Fall04/notes/Experimental_Evidence_for_Quantum_Mechanics.pdf Experimental Evidence for Quantum Mechanics
Videos should be found/made for all of those: videos of all key physics experiments
- speed of light experiment
- basically all experiments listed under Section "Quantum mechanics experiment" such as:
- Davisson-Germer experiment