liquid level monitoring
121Earthquake — For other uses, see Earthquake (disambiguation). Global earthquake epicenters, 1963–1998 …
122International Space Station — ISS redirects here. For other uses, see ISS (disambiguation). International Space Station …
123Depleted uranium — The DU penetrator of a 30 mm round[1] Depleted uranium (DU; also referred to in the past as Q metal, depletalloy, or D 38) is uranium with a lower content of the fissile isotope U 235 than natural uranium (natural uranium is about 99.27% uranium… …
124Climate change — For current and future climatological effects of human influences, see global warming. For the study of past climate change, see paleoclimatology. For temperatures on the longest time scales, see geologic temperature record …
125Aeroponics — is the process of growing plants in an air or mist environment without the use of soil or an aggregate medium. Aeroponic culture differs from both hydroponics and in vitro (Plant tissue culture) growing. Unlike hydroponics, which uses water as a… …
126Fouling — This article is about fouling in engineering. For uses of the term foul outside technology, see Foul (disambiguation). Not to be confused with fowling. Heat exchanger in a steam power plant, fouled by macro fouling …
127Cement kiln — Cement kilns are used for the pyroprocessing stage of manufacture of Portland and other types of hydraulic cement, in which calcium carbonate reacts with silica bearing minerals to form a mixture of calcium silicates. Over a billion tonnes of… …
128Hydraulophone — Infobox Instrument name=Hydraulophone names=Woodwater instrument classification= *Water *Woodwater *Reedless *Single reed *Double reed range=Basic range of a diatonic hydraulophone with 12 water jets: More detailed ranges and compasses appear… …
