Main Page | See live article | Alphabetical index The fluidic triode is an amplification device that uses a fluid to convey the signal. Although much studied in the laboratory they have few practical applications. Many expect them to be key elements of nanotechnology. Fluidic triodes were used as the final stage in the main Public Address system at the 1964 New York World's Fair. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.