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Try http://www.digikey.com Search for "ultrasonic transducer"

This is one of things you have to actually see to believe. When I was much younger my father and I were digging a trench in our yard and wanted to avoid a buried water pipe. I puzzled over how to find it while my dad went back into the house. He emerged with 2 coat hangers which he bent into the...

davidinindy, I went back to school for my EE after 16 years as an analytical chemist. At the time, I had 1 ex-wife, 2 kids with ex, 1 new wife and 1 dead-end job. My new wife was getting a degree in Chemistry and I convinced her to change majors. She is now happily employed as a Chem Eng...

Here are the steps I used for fuel characterization when I was a lowly chemist: 1) Obtain standard reference materials of diesel, kerosene and gasoline. If you are performing qualitative (i.e. is it or isn't it) analyses as opposed to regulatory or QC work then you can get these at the local...

If there is a university with an EE undergraduate program near you then consider offering your idea as a sponsored senior design project. When I took Sr. Design, I had some difficulty choosing a project. On the first day of class, the instructor handed out a list of supported projects and one...