how do i calculate the sensitivity of thermometers?
To calculate the sensitivity of a thermometer, you need to determine the change in temperature that results in a corresponding change in the reading displayed by the thermometer. Sensitivity is often measured as the change in reading per unit change in temperature.
Here are the steps to calculate the sensitivity of a thermometer:
1. Start by choosing a reference temperature and record the corresponding reading on the thermometer. This will serve as the initial reference point.
2. Next, expose the thermometer to a known change in temperature. For example, you can heat or cool the thermometer by a certain amount. Make sure to keep track of the change in temperature.
3. After allowing the thermometer to adjust to the new temperature, record the reading displayed by the thermometer.
4. Calculate the difference in temperature between the initial reference point and the new temperature. This can be done by subtracting the initial temperature from the final temperature.
5. Calculate the difference in reading between the initial reference point and the new reading displayed by the thermometer.
6. Finally, divide the difference in reading by the difference in temperature to obtain the sensitivity. This will give you the change in reading per unit change in temperature.
For example, suppose the initial reference point is 20°C and the corresponding reading on the thermometer is 25°C. After heating the thermometer by 10°C, it now reads 30°C. The difference in temperature is 10°C (30°C - 20°C), and the difference in reading is 5°C (30°C - 25°C). In this case, the sensitivity would be 0.5°C per °C (5°C / 10°C).
Remember that sensitivity can vary depending on the type and design of the thermometer. It's essential to follow the specific guidelines and instructions provided by the manufacturer for the thermometer you are using.