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.
Irish food is known for the quality and freshness of its ingredients. Most cooking is done without herbs or spices, except for salt and pepper. Foods are usually served without sauce or gravy. The staples of the Irish diet have traditionally been potatoes, grains (especially oats), and dairy products.Potatoes still appear at most Irish meals, with potato scones, similar to biscuits or muffins, a specialty in the north.rish food is known for the quality and freshness of its ingredients. Most cooking is done without herbs or spices, except for salt and pepper. Foods are usually served without sauce or gravy. The staples of the Irish diet have traditionally been potatoes, grains (especially oats), and dairy products.