Thermometer

A thermometer is an instrument used to measure temperature, either of a substance, object, or the environment.

Thermometers typically work based on the principle of thermal expansion or other temperature-dependent physical properties, like the movement of a liquid in a glass tube or the electrical resistance of a material.

They provide a numerical reading that indicates how hot or cold something is, usually measured in degrees Celsius (°C), Fahrenheit (°F), or Kelvin (K).

They are crucial tools in various fields including science, medicine, meteorology, and cooking. .

Thermometer meaning with examples

• The doctor placed the thermometer under my tongue to check for a fever, as my forehead felt warm. The liquid in the thermometer rose, giving a reading of 101°F, confirming I had a fever. Understanding the importance of accurate temperature readings is paramount in diagnosing illnesses, and the thermometer provided that assurance.
• Before baking the cake, the chef used a thermometer to verify the oven's internal temperature. This ensured the oven reached the required 350°F for a consistent bake, which is essential for even cooking. Accurate measurements are vital for success in culinary arts, and the thermometer is key.
• During a science experiment, students utilized a thermometer to track the temperature changes within a beaker of water being heated. The data collected helped demonstrate the relationship between energy input and heat change, solidifying their scientific understanding, with the thermometer the primary instrument.
• Meteorologists use thermometers to gather data on ambient air temperatures across the globe. These are integrated with data to track long-term climate variations. The thermometer helps in understanding weather patterns. Such readings aid in weather forecasts and climate analysis.
• Checking the refrigerator's internal temperature with a thermometer ensures the food is safely stored and preserved. This prevents spoilage by ensuring appropriate cooling is maintained. Without this vital instrument the fridge becomes unreliable.