Final answer:
A heat detector that experiences thermal lag takes longer to respond to changes in temperature compared to other detectors. This can be seen in the difference between warmth and cold detectors in humans. Commercial calorimeters also demonstrate the concept of thermal lag in their ability to detect small changes in temperature.
Step-by-step explanation:
A heat detector that experiences thermal lag is a device that takes longer to respond to changes in temperature compared to other types of detectors. This lag is caused by factors such as the depth at which the detector is situated and the materials used in its construction. For example, in humans, warmth detectors are located deeper in the skin than cold detectors, resulting in a delay in detecting warm stimuli.
An example of a heat detector with thermal lag is a calorimeter used in chemistry laboratories. Commercial calorimeters are designed to detect small changes in temperature, down to several millionths of a degree. These calorimeters operate based on the principle of thermal insulation and can be used with smaller volumes of solution.