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2. Tube tester - Wikipedia

   en.wikipedia.org/wiki/Tube_tester

   A tube tester is an electronic instrument designed to test certain characteristics of vacuum tubes (thermionic valves). Tube testers evolved along with the vacuum tube to satisfy the demands of the time, and their evolution ended with the tube era.

3. Tube tool - Wikipedia

   en.wikipedia.org/wiki/Tube_tool

   Tube Testers- Use air pressure or vacuum to test for leaks, cracks, and material failures in a tube. Both manual activated and air activated models are available. To test for leaks in tubes, two operators are required with an operator at each end of the vessel. Step 1 - Seal the tube at both ends. Step 2 - Build air pressure or vacuum in the tube.

4. Test tube - Wikipedia

   en.wikipedia.org/wiki/Test_tube

   The tube is usually held by its neck with a clamp or tongs. By tilting the tube, the bottom can be heated to hundreds of degrees in the flame, while the neck remains relatively cool, possibly allowing vapours to condense on its walls. A boiling tube is a large test tube intended specifically for boiling liquids.

5. Eddy-current testing - Wikipedia

   en.wikipedia.org/wiki/Eddy-current_testing

   Variations in the electrical conductivity and magnetic permeability of the test object, and the presence of defects causes a change in eddy current and a corresponding change in phase and amplitude that can be detected by measuring the impedance changes in the coil, which is a telltale sign of the presence of defects. [5]

6. Curve tracer - Wikipedia

   en.wikipedia.org/wiki/Curve_tracer

   A curve tracer is a specialised piece of electronic test equipment used to analyze the characteristics of discrete electronic components, such as diodes, transistors, thyristors, and vacuum tubes. The device contains voltage and current sources that can be used to stimulate the device under test (DUT).

7. Here's What a Professional Taste Tester Actually Does All Day

   www.aol.com/2015/02/17/taste-tester-food...

   Lauren Grosskopf By Jacquelyn Smith Lauren Grosskopf eats food for a living. Well, that's just one part of her job. There's actually a lot more to being a food scientist than taste testing all day.