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A magnetic stirrer or magnetic mixer is a laboratory device that employs a rotating magnetic field to cause a stir bar (or flea) immersed in a liquid to spin very quickly, thus stirring it. The rotating field may be created either by a rotating magnet or a set of stationary electromagnets, placed beneath the vessel with the liquid.
Although the magnetic stirrer has lately come to replace the shaker, it is still the preferred choice of equipment when dealing with large volume substances, when simultaneous agitation is required or when stirring bar could destroy delicate content like living cells. [1]
An agitator is a device or mechanism to put something into motion by shaking or stirring.There are several types of agitation machines, including washing machine agitators (which rotate back and forth) and magnetic agitators (which contain a magnetic bar rotating in a magnetic field).
A hot plate or hotplate is a heated flat surface on a stove or electric cooker on which food may be cooked. [3] It comprises a heated top which is flat and usually circular, and may be made of metal, ceramic, or heat-resistant glass, with resistive wire forming a heating element fitted underneath and a thermostat to control the temperature.
Stirrer may refer to: Agitator, a general type of mechanical device; Magnetic stirrer, a laboratory device; Stirring rod, a simple laboratory tool; Stir stick, for stirring drinks; Stirring spoon, a type of spoon; Whisk or other kind of stirrer used in cooking; Mixer (appliance), a kitchen appliance
The magnetic field passes through the bottom of the pot A, inducing eddy currents within it. Unlike this concept, a modern cooking surface uses electronically generated high-frequency current. Cool Top 2 (CT2) by Westinghouse 1972 Household foil is much thinner than the skin depth in aluminum at the frequencies used by an induction cooker.
Linear variable differential transformer (LVDT) – Magnetic – detects linear position; Rotary encoder, Shaft Encoder – Optical, magnetic, resistive or switches – detects absolute or relative angle or rotational speed; Inclinometer – Capacitive – detects angle with respect to gravity; Motion sensor, Vibration sensor
The horizontal plates form a heat sink, cooled by airflow from a fan. The magnetic field is produced by two powerful ring magnets, the lower of which is just visible. Almost all modern oven magnetrons are of similar layout and appearance. In microwave ovens, the waveguide leads to a radio-frequency-transparent port into the cooking chamber.