Reflection of Sound Using a Reflector

| View Cart ⇗ | Info

“Hold a lamp reflector or other large concave mirror directly facing the sun, so as to bring the rays of light to a focus...At some point, W, between F and C, the center of curvature of the reflector, hang a loud-ticking watch, and hunt for the point, X, at which the ear can most distinctly hear the ticking. Moving the reflector will render the sound inaudible.” -Avery 1895




Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 220


TIFF (full resolution)

2400×1253, 172.0 KiB

Large GIF

1024×534, 29.9 KiB

Medium GIF

640×334, 17.0 KiB

Small GIF

320×167, 7.5 KiB