Basically, when a natural frequency acts on coke bottle, It resonates. During the resonance, the lump of air in neck of it goes under simple harmonic motion. It goes in and out the bottle, increasing and decreasing pressure of cavity of coke periodically.
When air goes inside the bottle, the...
Thanks! there's something confusing though;; When length of Open pipe increase, It is sure that the resonance frequency decreases due to friction. However, isn't the effective length, or end correction for Helmholtz Resonator L+1.4r??
What I think is because the "end correction" range increase...
I made a helmholtz resonator by myself and played its resonace frequency sound to it. Obviously, the resonator resonated and near the open end of resonator, I could feel wind.
So I placed candle near the opening to see the strength of wind. Surprisingly, If decibel of soundwave was constant...
Resonance frequency and Natural frequency??
Say there is an empty bottle of coke., and you know for sure that
the bottle resonates most at 320hz.
when the bottle resonates, the bottle will vibrate.
the question is,
1.if the bottle also resoates at 318hz( bu not most), will the bottle...