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Answer :
Final answer:
Thermometers must be calibrated to ensure accurate temperature readings. This calibration process involves comparing measurements to standardized temperatures at 0°C and 100°C. Regular calibration is essential in fields where precise temperature measurements are critical.
Explanation:
Importance of Calibrating Thermometers
To ensure that thermometers read temperatures accurately, it is essential to calibrate them regularly. Calibration involves adjusting the readings of an instrument to match a standard value. This process is vital for applications in various fields, including science and medicine, where precise temperature measurements are critical.
Calibration Process
The calibration of thermometers typically requires using fixed points of known temperature. For instance:
- Place the thermometer in an ice-water bath to achieve a temperature of 0°C.
- Next, immerse the thermometer in boiling water to reach a temperature of 100°C.
- Finally, measure the room temperature using a reliable thermometer as an additional reference.
The accuracy of these measurements can be evaluated by deriving a regression line, where the slope and intercept indicate the relationship between the thermometer readings and the true values.
Conclusion
Thus, for thermometers to function effectively and provide accurate readings, they must be calibrated. This step is crucial to avoid discrepancies in temperature readings, which can lead to incorrect conclusions or decisions based on those measurements.
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