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Absolute pressure is the sum of gauge pressure and atmospheric pressure. For reasons we will explore later, in most cases the absolute pressure in fluids cannot be negative. Fluids push rather than pull, so the smallest absolute pressure is zero. (A negative absolute pressure is a pull.)
Zero kelvin (−273.15 °C) is defined as absolute zero. Absolute zero is the lowest limit of the thermodynamic temperature scale; a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value.
Absolute zero is defined as the point where no more heat can be removed from a system, according to the absolute or thermodynamic temperature scale. This corresponds to zero Kelvin, or minus 273.15 C.
Absolute zero, temperature at which a thermodynamic system has the lowest energy. It corresponds to minus 273.15 degrees Celsius and to minus 459.67 degrees Fahrenheit. While all molecular movement does not cease at absolute zero, no energy from that motion is available for transfer to other systems.
Absolute pressure is the measure of pressure with respect to absolute zero pressure, which is the pressure of a perfect vacuum. The absolute pressure measurement is required for the ideal gas law in the same sense that temperature must be represented by its absolute unit, the Kelvin.
Absolute pressure is measured relative to absolute zero on the pressure scale, which is a perfect vacuum. (Absolute pressure can never be negative.) Absolute pressure is indicated by p, and is identical to the familiar thermodynamic pressure.
Absolute zero is the lowest possible temperature where heat energy is absent in a substance. Absolute zero is also known as zero kelvin temperature since it measures zero on the Kelvin scale. Minimal vibrational motion is displayed at this temperature by fundamental particles of nature.
Absolute zero can be defined as the temperature at which matter does not move. At absolute zero, even subatomic vibrations are put to a grinding halt. Because the pressure in this experiment is caused by the movement of a gas, the pressure would cease to exist when the gas stops moving (a.k.a. absolute zero).
Absolute zero is defined as 0 Kelvin, or -273.15°C (-459.67°F). At this temperature, particles in a substance have minimal vibrational motion, representing the lowest limit of the thermodynamic temperature scale.
Absolute pressure is the sum of gauge pressure and atmospheric pressure. For reasons we will explore later, in most cases the absolute pressure in fluids cannot be negative. Fluids push rather than pull, so the smallest absolute pressure is zero.