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2. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   Galvanized rigid conduit (GRC) is galvanized steel tubing, with a tubing wall that is thick enough to allow it to be threaded. Its common applications are in commercial and industrial construction. [1] It is designed to protect wire and connectors. Intermediate metal conduit (IMC) is a steel tubing heavier than EMT but lighter than RMC. It may ...

3. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

4. 1.25-meter band - Wikipedia

   en.wikipedia.org/wiki/1.25-meter_band

   Amateur use of VHF and UHF allocations exploded in the late 1960s and early 1970s as repeaters started going on the air. Repeater use sparked a huge interest in the 2-meter and 70-centimeter (420–450 MHz) bands; however, this interest never fully found its way into the 1.25-meter band.

5. Triple point - Wikipedia

   en.wikipedia.org/wiki/Triple_point

   A typical phase diagram.The solid green line applies to most substances; the dashed green line gives the anomalous behavior of water. In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium. [1]

6. American National Standards Institute - Wikipedia

   en.wikipedia.org/wiki/American_National...

   ANSI was most likely formed in 1918, when five engineering societies and three government agencies founded the American Engineering Standards Committee (AESC). [8] In 1928, the AESC became the American Standards Association (ASA).

7. List of He-Man and the Masters of the Universe characters

   en.wikipedia.org/wiki/List_of_He-Man_and_the...

   The Masters of the Universe franchise, created in 1982 as a toyline by American company Mattel, contained many characters in its various incarnations as a toyline, the television series He-Man and the Masters of the Universe, a German series of audioplays, The New Adventures of He-Man, He-Man and the Masters of the Universe, Masters of the Universe: Revelation and He-Man and the Masters of the ...