Question
Download Solution PDFInstrument used to measure temperature is __________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Thermometer.
Key Points
- A thermometer is an instrument used to measure temperature in various fields such as medicine, meteorology, and industry.
- Modern thermometers typically rely on thermal expansion or the principle of thermoelectricity to measure temperature.
- Thermometers are categorized based on their application, such as clinical thermometers (used in healthcare) and laboratory thermometers (used in scientific research).
- Common types of thermometers include mercury thermometers, digital thermometers, infrared thermometers, and gas thermometers.
- The unit of temperature measurement commonly used includes Celsius (°C), Fahrenheit (°F), and Kelvin (K).
Additional Information
- Mercury Thermometer
- Invented by Daniel Gabriel Fahrenheit in 1714.
- Uses mercury enclosed in a glass tube to measure temperature based on thermal expansion.
- Widely used in clinical and industrial applications but phased out in many countries due to mercury toxicity concerns.
- Digital Thermometer
- Uses electronic sensors to measure temperature quickly and accurately.
- Widely used in medical, industrial, and home applications.
- Advantageous for being mercury-free and environmentally safe.
- Infrared Thermometer
- Measures temperature using infrared radiation emitted by objects.
- Ideal for non-contact temperature measurement, commonly used in healthcare and industry.
- Highly effective for measuring surface temperatures or during the COVID-19 pandemic for fever detection.
- Temperature Scales
- Celsius (°C): Water freezes at 0°C and boils at 100°C under standard conditions.
- Fahrenheit (°F): Water freezes at 32°F and boils at 212°F under standard conditions.
- Kelvin (K): The SI unit of temperature, where 0 K represents absolute zero.
- Conversion formulas exist between these scales for practical applications.
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