A hydrophone is a microphone designed to be used underwater for recording or listening to underwater sound.
Used in World War I, hydrophones were employed by convoy escorts to detect U-boats, greatly lessening the effectiveness of the submarine. From late in World War I until the introduction of active sonar, hydrophones were the sole method for submarines to detect targets while submerged, and remain useful today (source: wikipedia).
Come and build your very own hydrophone in this two-day workshop! Clay Chaplin will lead you through the construction of your hydrophone using a kit we’ll provide, then test it out in the neighborhood.
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