Propagation Of Sound In Solid Bodies For Testing Lab Description and Specifications for Lab Tenders
Propagation Of Sound In Solid Bodies.
Principle
The
transmission (or conduction) of sound through a solid body means: One
end of the solid body is caused to oscillate (e.g. by placing a tuning
fork on it). This oscillation propagates through the solid body to the
other end of the solid body. The transmission through the solid body can
be heard directly as an oscillation of the other end (experiment 2) or
through the air (experiments 1 and 3).
Tasks
Examine,
with the aid of several examples (a plastic ruler, the human head, a
thin thread), as to whether sound cannot only propagate in air but also
in solid bodies. Show that the sound of the tuning fork can no longer be
heard, or that it can only
be slightly heard, through the air at a
greater distance (approximately 20 cm). Demonstrate that the conduction
through solid bodies over comparable distances ensures that the sound
can be heard clearly.
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