“LA represents a ray of light propagated in air, falling obliquely upon the surface of the water at A, and deviated by the water from AE to AK.” -Avery 1895
Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 350
2427×2400, 255.5 KiB
1024×1012, 35.3 KiB
640×632, 19.7 KiB
320×316, 8.8 KiB