37 Stereo hearing
This exhibit shows how our ears
determines the direction to a sound source. The brain calculates the
direction of a sound wave by comparing the relative time of
arrival to each ear.
Two visitors are needed. One is sitting holding the ear caps close to
her ears. The other ticks a stick near the middle of the tube. The
sitting person can easily identify on which side of the middle of the
tube her friend is ticking the stick.
Colour: Green, red
Width: 850 mm
Length: 760 mm
Height: approx 2520 mm