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2. Bang–bang control - Wikipedia

   en.wikipedia.org/wiki/Bang–bang_control

   A water heater that maintains desired temperature by turning the applied power on and off (as opposed to continuously varying electrical voltage or current) based on temperature feedback is an example application of bang–bang control. Although the applied power switches from one discrete state to another, the water temperature will remain ...

3. Marine aquarium - Wikipedia

   en.wikipedia.org/wiki/Marine_aquarium

   A marine aquarium is an aquarium that keeps marine plants and animals in a contained environment. Marine aquaria are further subdivided by hobbyists into fish only (FO), fish only with live rock (FOWLR), and reef aquaria. Fish only tanks often showcase large or aggressive marine fish species and generally rely on mechanical and chemical filtration.

4. Temperature control - Wikipedia

   en.wikipedia.org/wiki/Temperature_control

   Temperature control is a process in which change of temperature of a space (and objects collectively there within), or of a substance, is measured or otherwise detected, and the passage of heat energy into or out of the space or substance is adjusted to achieve a desired temperature. [1] Thermoregulation is the act of keeping the body at a ...

5. Induction heater - Wikipedia

   en.wikipedia.org/wiki/Induction_heater

   An induction heater is a key piece of equipment used in all forms of induction heating. Typically an induction heater operates at either medium frequency (MF) or radio frequency (RF) ranges. [1] Four main component systems form the basis of a modern induction heater. the control system, control panel, or ON / OFF switch; in some cases this ...

6. Aquarium - Wikipedia

   en.wikipedia.org/wiki/Aquarium

   A freshwater aquarium with plants and various tropical fish. The underwater tunnel in the London aquarium. An aquarium (pl.: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquatic ...

7. Infrared heater - Wikipedia

   en.wikipedia.org/wiki/Infrared_heater

   An infrared heater or heat lamp is a heating appliance containing a high-temperature emitter that transfers energy to a cooler object through electromagnetic radiation. Depending on the temperature of the emitter, the wavelength of the peak of the infrared radiation ranges from 750 nm to 1 mm. No contact or medium between the emitter and cool ...