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A mid-ocean ridge (MOR) is a seafloor mountain system created by plate tectonics. It is a massive undersea mountain range that spans the world’s oceans.…

Atomic hydrogen welding (AHW) is a welding technology invented in the early twentieth century, primarily for combining metals such as aluminum and magnesium. It is…

A variable-frequency transformer (VFT) transmits electricity between two (asynchronous or synchronous) alternating current frequency domains. A Variable-Speed Drive (VSD) or Adjustable-Frequency Drive (AFD) is a…

Nikola Tesla invented the Tesla coil, which is an electrical resonant transformer circuit, about 1891. It is used to generate high-voltage, low-current, high-frequency alternating current…

A spark-gap transmitter is an early type of radio transmitter that generates radio waves to communicate. It is an old type of radio transmitter that…

An ignition coil is an essential part of an internal combustion engine’s ignition system. It is used in the ignition system of a spark-ignition engine…

Urban climatology is the study of urban climates. It is a subfield of climatology that investigates climate in urban contexts. It is a subfield of…

Oceanic trenches are long, narrow, and very deep depressions in the ocean floor. They are the deepest sections of the Earth’s oceans, generated mostly by…

Conformational isomerism is the phenomenon in which molecules can exist in distinct spatial configurations due to rotation around single bonds. In chemistry, it is a…

Cyclopentyne, a cyclic hydrocarbon, with the chemical formula C₅H₆. It is a cycloalkyne with five carbon atoms in its ring. It is a highly reactive…

A photoionization detector (PID) is a type of gas detector. It is a type of gas detector that is widely used in industrial hygiene, environmental…

A machine-tool dynamometer is a device for measuring cutting forces and torque during machining processes. It is a multi-component dynamometer that is used to measure…