I understand what you're saying, but I'm still not sure why the reflection from an open tube would be the inverse and such. Is there an online resource that could explain this to me?
This is not a question as such, but it's for answering a homework question.
I understand how stationary sound waves in a closed tube are formed, as they reflect off the closed end and the two waves traveling in opposite directions interfere to form a stationary resultant wave (that's how I was...