A mercury switch (also known as a mercury tilt switch) is a switch which opens and closes an electrical circuit through a small amount of liquid mercury.Contents.he envelope may also contain air, an inert gas, or a vacuum. Gravity is constantly pulling the drop of mercury to the lowest point in the envelope. When the switch is tilted in the appropriate direction, the mercury touches a set of contacts, thus completing the electrical circuit through those contacts.
Irish stew is the product of a culinary tradition that relied almost exclusively on cooking over an open fire. It seems that Irish stew was recognized as early as about 1800.
(comparative more Irish, superlative most Irish) 1  Pertaining to or originating from Ireland or the Irish people. Sheep are typical in the Irish landscape. 2  Pertaining to the Irish language. ( 3 Derogatory) Nonsensical, daft or complex.