Temperature ? Zeroth Law of Thermodynamic ? How do you visualize the temperature is ? Temperature is assosiated with the translation, rotation, vibration, and electronic states of the atoms and molecules that comprises matter. The more active the atoms and molecules the higher the temperature. It is like … mmm when you’re more active, like when you’re running, you feel like your body is warmer right ? you know that your body temperature is higher than before, this is happen because the atoms and molecules that comprises your body is more active. That is, when a object is brought into contact with another body that is at a different temperature, heat is transferred from the body at higher temperature to the one at lower temperature until both bodies attain the same temperature . At that point, the heat transfer stops, and the two bodies are said to have reached thermal equilibrium . The equality of temperature is the only requirement for thermal equilib...
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Pressure ? Pressure is defined as a normal force exerted by a fluid per unit area . We speak of pressure when we deal with a fluid or gas . The counterpart of pressure in a solid is normal stress . The actual pressure at spesific point is called absolute pressure , it is measured relative to absolute zero pressure. Unfortunately, most pressure measuring device is calibrated to read zero pressure in atmospheric pressure , so they indicate the difference between the absulte pressure and the atmospheric pressure. The difference is called the gage pressure . The pressure below atmospheric pressure is called vacuum pressure.
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