Eli5- How does the stick that goes “oooah” when you turn it one way and “aaoooh” when you turn it the other way work??

Question

Eli5- How does the stick that goes “oooah” when you turn it one way and “aaoooh” when you turn it the other way work??

In: Other

Answer 1

It’s similar to whistling from a low tune to high tune or vice versa. Your ‘tube length’ (mouth) goes larger and smaller to make the tone different.