63.8 MB (920.0 KB compressed)
4724 x 4724 pixels
39.9 x 39.9 cm ⏐ 15.7 x 15.7 in (300dpi)
KEVIN CURTIS / SCIENCE PHOTO LIBRARY KEVIN CURTIS / SCIENCE PHOTO LIBRARY
Tin can telephone being used by two boys. The boy in the foreground is speaking into one of the cans, and the sound waves are being transmitted along the string to the other can, being held to the other boy's ear. This apparatus can be used to demonstrate the principles of sound waves and their transmission.
Model release available. Property release not required.