The fact that Celsius thermometers contain mercury that is very harmful to humans is a disadvantage of their usage.
WHAT IS A THERMOMETER?
- A thermometer is an instrument or device that is used to measure the temperature of an object or substance.
- The temperature refers to how hot or cold a substance is. Temperature can either be measured in Celsius, Fahrenheit or Kelvin.
TYPES OF THERMOMETERS:
- Thermometer can be of different types ranging from mercury thermometer to digital thermometer. One of the types of thermometers is the Celsius thermometer, which measures temperature in degree Celsius (°C).
- However, one major disadvantage of using Celsius thermometers is that they contain dangerous and highly toxic chemical called MERCURY, which is harmful to man.
Learn more; https://brainly.com/question/23417342