when you slide your thinger around the rim of glass it produces resonance
the matter which vibrates is a glass, not air, right?
i understand that when ou hit a glass once it produces sound as by hitting you displace mass of glass from its equilibrium.
but why sliding the rim produces sound? if it is due to displacement caused by weight of the finger placed on the rim, then why sliding the wall of the glass does not produce sound?
i have read previous threads, but the topic is still unclear.
thank you
the matter which vibrates is a glass, not air, right?
i understand that when ou hit a glass once it produces sound as by hitting you displace mass of glass from its equilibrium.
but why sliding the rim produces sound? if it is due to displacement caused by weight of the finger placed on the rim, then why sliding the wall of the glass does not produce sound?
i have read previous threads, but the topic is still unclear.
thank you
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