Mercury. Now commonly colored alcohol.
Mercury is a liquid metal used in thermometers. However, it becomes a solid at -37.9 F and it can cause mercury poisoning if ingested or inhaled. Therefore, most theremometers use ethyl-alcohol or a plastic strip covered with liquid crystals (called a liquid crystal thermometer).
Mercury!
Mercury
mercury
Mercury.
Mercury.
Mercury is the element commonly used in liquid-in-glass thermometers.
Mercury is the only metal that is liquid at room temperature. It is used in thermometers, barometers, and some electrical switches and relays.
Many thermometers use the liquid metal mercury, Hg.
mercury
Mercury