Thermodynamics is the study and application of the thermal energy (often called the internal energy) of systems.One of the central concepts of thermodynamics is temperature. Since childhood, We have been developing a working knowledge of thermal energy and temperature. For example, you know to be cautious with hot foods and hot stoves and to store perishable foods in cool or cold compartments. You also know how to control the temperature inside home and car, and how to protect yourself from wind chill and heat stroke.
Examples of
how thermodynamics figures into everyday engineering and science are
countless. Automobile engineers are concerned with the heating of a car
engine, such as during a NASCAR race. Food engineers are concerned both with
the proper heating of foods, such as pizzas being microwaved, and with the proper
cooling of foods, such as TV dinners being quickly frozen at a processing plant.
Geologists are concerned with the transfer of thermal energy in an El Niño event
and in the gradual warming of ice expanses in the Arctic and Antarctic. Agricultural
engineers are concerned with the weather conditions that determine whether
the agriculture of a country thrives or vanishes. Medical engineers are concerned
with how a patient’s temperature might distinguish between a benign viral
infection and a cancerous growth.
The starting
point in our discussion of thermodynamics is the concept of temperature
and how it is measured.
Reference:
David Halliday, Jearl Walker, and Robert Resnick, Fundamentals of Physics 10th edition
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