Digital thermometers use heat sensors, typically thermistors or infrared sensors, to detect temperature changes. These sensors convert thermal energy into electrical signals, which are then processed and displayed as a temperature reading on the screen.
Tiwari Academy Discussion Latest Questions
Yes, my right hand felt the water in container B as cool, while my left hand perceived it as warm. This illustrates how temperature perception is relative and influenced by prior thermal experiences in different water containers.
My right hand, after being in warm water, will feel a cool sensation upon entering container B. Initially, it may feel uncomfortable due to the temperature contrast, but it will gradually feel more pleasant.
Differences in temperature readings may arise from measurement inaccuracies, variations in thermometer calibration, environmental factors, or timing during measurement. Each student’s technique could influence results, leading to slight variations in recorded boiling water temperatures.
The liquid commonly used in clinical thermometers is mercury, known for its uniform expansion with temperature changes. However, due to safety concerns, many modern thermometers now use alcohol-based liquids, often colored for better visibility.