Hello everyone. I just joined the forum and I thought I'd start off by introducing myself. I'm from Boston, I have an MS in physics and I'm disabled. I thus have way too much time on my hands. I need an outlet for my passions, which are in physics and mathematics. I used to get a sense of achievement from work but since I can never work again I’ll have to get that from somewhere else. I thought of tutoring but that doesn’t seem workable. So in the end I thought it’d be nice to join a discussion forum and try to help students and others who want to learn physics. It seems like doing volunteer work in this sense is a good way to use my time. So I’m here and wanted to say that and also say Hello!