tuning fork on wave guide, tuning fork dampened with tape, rubber-tipped mallet
Description:
For
beat
frequency,
one
tuning
fork
should
be
mounted
on
a
wave
guide,
and
the
other
tuning
fork
of
the
same
frequency
should
have
tape
on
one
of
the
tines.
Smash
the
bases
of
the
two
forks
together
and
set
the
free
fork
on
the
wave
guide
as
well.
The
beats
will
sound
like
a
warbling.
Otherwise,
take
tuning
forks
and
set
them
into
resonance
using
the
rubber
mallet.
PIRA 3B60.10