Page:Young - Outlines of experiments and inquiries respecting sound and light (1800).djvu/67

This page does not need to be proofread.

Retrieved from "https://en.wikisource.org/w/index.php?title=Page:Young_-_Outlines_of_experiments_and_inquiries_respecting_sound_and_light_(1800).djvu/67&oldid=14138264"