Visible Effects of The Invisible

072-6208-5Visible Effects of the Invisible graphically demonstrates resonant frequencies. A horizontal, clear glass tube is partially with clear fluid. Sound generated by a speaker housed at one end of the tube causes the air in the tube to vibrate and geysers appear in the fluid where the motion of air is greatest. The geysers are generated at various sections of the tube by the adjusting the resonant frequency of the speaker which causes pressure differentials.

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