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 Beef Stew [slow cooker]. [Slow cooker version]. The original Irish Stew consists of neck of mutton, almost as much potato as meat, and sliced onions arranged in layers and stewed.I make this beef version exactly as it was passed on to me by my mum.rish Beef Stew [slow cooker]. [Slow cooker version]. The original Irish Stew consists of neck of mutton, almost as much potato as meat, and sliced onions arranged in layers and stewed.