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Original salt water dimmers mounted on the wall in the wings of Alexandra Palace Theatre. Salt water dimmers, which are an early example of liquid rheostats, were used in theatres after the introduction of electric stage lighting to control the brightness of the lights on stage.
A liquid rheostat or water rheostat [1] or salt water rheostat is a type of variable resistor. This may be used as a dummy load or as a starting resistor for large slip ring motors. In the simplest form it consists of a tank containing brine or other electrolyte solution, in which electrodes are submerged to create an electrical load .
Early examples of a rheostat dimmer include a salt water dimmer, a kind of liquid rheostat; the liquid between a movable and fixed contact provided a variable resistance. The closer the contacts to each other, the more voltage was available for the light.
Alexandra Palace Theatre after 2018 refurbishment Stage Machinery at Alexandra Palace Weights used with stage machinery Salt water dimmers backstage at Alexandra Palace Theatre Film Projector housing in Alexandra Palace Theatre Sunday service in the theatre during WW1, painted by George Kenner, an internee, View of the stage from the theatre balcony after the 1922 refurbishment Theatre used by ...
Salt marsh during low tide, mean low tide, high tide and very high tide (spring tide). A coastal salt marsh in Perry, Florida, USA.. A salt marsh, saltmarsh or salting, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides.
An example spangram with corresponding theme words: PEAR, FRUIT, BANANA, APPLE, etc. Need a hint? Find non-theme words to get hints. For every 3 non-theme words you find, you earn a hint.
Brine (or briny water) is a high-concentration solution of salt (typically sodium chloride or calcium chloride) in water.In diverse contexts, brine may refer to the salt solutions ranging from about 3.5% (a typical concentration of seawater, on the lower end of that of solutions used for brining foods) up to about 26% (a typical saturated solution, depending on temperature).
Bitterns can be produced from salt ponds which get their color from organisms adapted to the hypersaline environment. [1]Bittern (pl. bitterns), or nigari, is the salt solution formed when halite (table salt) precipitates from seawater or brines.