I'm performing an educational experiment on the piezoelectric effect in quartz, and it would be useful for me to know its electric permittivity.
I've been told that the quartz sample that I have is a cut 5° about one of its crystallographic axis, but it's not specified which axis that is. Is that ambiguity critical to the possibility of extracting the information I need from a table?
If there's any other information you need, please let me know in a comment. Thank you very much.