In general, a psychrometer is an instrument composed of two thermometers, used to measure the relative humidity of the air with high precision. As seen in the question above, the two thermometers allow a simultaneous measurement of the temperatures of the wet bulb and the dry bulb. Meteorologists usually use a more efficient form of the psychrometer to measure relative humidity, which is the sling psychrometer.
Similarity: both burnings lead to energy production and both result in CO2 emission. difference: food is burned in the process called cellular respiration. this process consists of a few certain stages preventing our body from heat shock.