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An induction coil (sometimes known as a “spark coil”) is a type of electrical transformer that generates high-voltage pulses from a low-voltage direct current (DC)…

An inflatable building is a structure comprised of two layers of membrane joined together, often using spars of the same material. These structures are often…

Palaeogeography (or paleogeography) is the study of historical geography, primarily physical landscapes. It may also involve the study of human or cultural contexts. It entails…

Geodynamics is a subject of geophysics that studies the dynamics of the Earth. It aims to comprehend the forces, processes, and movements that change the…

Electrical resonance occurs in an electric circuit at a specific resonant frequency when the impedances or admittances of circuit elements cancel out. It refers to…

Acoustic resonance occurs when an acoustic system amplifies sound waves with frequencies that match one of its own natural vibration frequencies (its resonance frequencies). It…

Mechanical resonance is the tendency of a mechanical system to respond with greater amplitude when the frequency of its oscillations is closer to the system’s…

Sympathetic resonance, also known as sympathetic vibration, is a harmonic phenomenon in which a passive string or vibratory body responds to external vibrations that are…

A cycloalkyne is a cyclic counterpart of an alkyne (−C≡C−). A cycloalkyne is a closed ring of carbon atoms with one or more triple bonds.…

A flame ionization detector (FID) is a scientific tool that detects analytes in a gas stream. It is commonly employed as a detector in gas…

An electron capture detector (ECD) is a device that detects atoms and molecules in gas by attaching electrons using electron capture ionization. It is a…

Hydrogen embrittlement (HE), also known as hydrogen-assisted or hydrogen-induced cracking (HIC), is a loss in a metal’s ductility caused by absorbed hydrogen. It is a…