The aim of /r/Physics is to build a subreddit frequented by physicists, scientists, and those with a passion for physics. Papers from physics journals (free or otherwise) are encouraged. Posts should be pertinent, meme-free, and generate a discussion about physics. Please report trolls and intentionally misleading comments.
A subreddit to draw simple physics questions away from /r/physics. No real rules; ask away. If your basic physics question isn't answered in a day, you can post it to /r/physics if you mention that you didn't get an answer on /r/AskPhysics (unless it's a homework-related physics question).
If a million people gave a dollar to someone, they could be a millionaire. We are an embodiment of this showerthought: https://redd.it/2mq94c Additionally, you can join our mailing list for monthly reminders at send.redditmm.com
Math education! Anything math related that is useful for education, teachers, or students. There should be an emphasis on usefulness (such as good internet resources or ideas for how to teach a concept). Note: This is not a subreddit to publicize each post in your (or any single) blog or website, but rather to point out resources you've found that you could actually see bringing something useful to a math class.
Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. AskEngineers is a forum for questions about the processes and standards used to build these systems, as well as for questions about the engineering profession and its many disciplines.