Based on this question Are there any anonymous contributions to mathematics that had a great impact? , I would like to ask the same question for physics. Physics is different from mathematics in the sense that you need to experiments in order to move on, so I guess an anonymous contribution would be much harder.
Looking at the examples of the mathematics thread, I wonder if a 4chan equivalent post (https://hsm.stackexchange.com/a/13394/6609) on particle or cosmology could ever be taken seriously.
Are there anonymous contributions to physics with large impact in the history of the field?