The mechanical wave emitted by the tuning
fork is very weak, and it is often only heard clearly when it is brought to the
ear. For this reason, the tuning fork is sometimes pressed against a solid
surface such as a table after being struck. This allows the plane to act as a
resonant plate, greatly increasing the amplitude energy.
In physics teaching, tuning forks can be
used to demonstrate the properties of mechanical waves. Tap the tuning fork to
acquire a spectrogram. Tap the tuning fork, the tuning fork has a small
amplitude, and the amplitude of the spectrogram is small. At this time, the
sound of the tuning fork is also small. When the tuning fork is hit hard, the
amplitude of the tuning fork is large and the amplitude of the spectrogram is
large. At this time, the sound of the tuning fork is also loud. The loudness of
the mechanical wave is related to the amplitude of the mechanical wave of the
tuning fork. The higher the amplitude, the higher the loudness. The smaller the
amplitude, the smaller the loudness.
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