You can post links, gifs, videos and or text explanations (or other formats if appropriate). If there are more aspects to the topic that you feel a single source doesn't cover, you are more than welcome to post follow ups in the body of the post or comments
In terms of individual experiments I feel like it would moreso fall under the context of a broader topic/explanation so you would be free to start a post with a general explanation and then start working out in the comments the details of experiments and bodies of data. If you feel that you or the source provides a sufficient explanation, feel free to put that as the main link / body content
One thing I will probably update is to add [Question] tags as well
Also for a bit of context, I used to run r/howthingswork and it didnt feel right linking gifs and content hosted on reddit directly or on gfycat since thats shutting down