As the temperature rises, the mercury expands and moves up the narrow capillary tube, and as it falls, the mercury contracts. Furthermore, mercury has a uniform and predictable expansion rate, and its silvery opacity makes the meniscus easy to see and read against the background of the glass tube, contributing to its reputation for accuracy.
Understanding the Health Risks of Mercury Thermometer Breakage
The collected mercury and broken glass must be placed in a sealed container and taken to a hazardous waste facility. Their robust construction allowed for repeated use and calibration, cementing their role in any setting where precise temperature data was non-negotiable.
This mechanical simplicity is the core reason for its long-standing accuracy and reliability in various applications. Unlike water, it remains liquid across a vast temperature range, from nearly -40°C to over 300°C, making it suitable for diverse environments.
Health Risks of Mercury Thermometer Breakage and Safe Cleanup
A printed scale along the tube allows the user to read the temperature based on the height of the mercury column. Regulatory Shifts and Phase-Outs Beginning in the late 20th century, the widespread use of mercury in consumer and medical products came under scrutiny due to its toxicity.
More About Use of mercury in thermometer
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