Temperature is the reading obtained from a thermometer, which measures how hot or cold a substance is. At a microscopic level, temperature describes the average kinetic energy of molecules within a material or system.
It is a measurable physical property of an object and can be considered with other measurable physical properties such as velocity , mass , and density just to name a few. Both Kelvin and Celsius scales have their advantages and disadvantages:. The scales differ by Viewed 27k times. How does one come up with this? Improve this question. MarianD 2, 2 2 gold badges 10 10 silver badges 18 18 bronze badges.
Add a comment. Active Oldest Votes. Improve this answer. Then there would be no lower limit. What's important is that temperature is just energy per degree of freedom and energy is additive. We don't express pressures and volumes in terms of their logarithms, either, so it would be equally unnatural for the temperature.
It's the only justification for decibels, pH, Richter scales, and other things: you just don't want the laymen to ever pronounce "ten to the power of [a number]", that's the only reason. But people achieved just a billionth of kelvin, that's the record, and those small numbers aren't extreme and one can express them in words like billionth without using "ten to minus [a big power]".
Temperature is a measure of the transmissible energy contained in the molecules of a substance. It is theoretically possible for said molecules to have no detectable energy all energy they do have is inherent in their atomic structure, is not transmissible, and to remove that energy would be to destroy matter ; that's zero degrees of temperature.
We've gotten to within a fraction of a degree last I checked. However, you can't have less than no energy. With this definition, the triple point was about 0. If the volume of a container with a gas inside stays the same, the pressure of a gas increases as its temperature increases. When hotter, the gas particles will be travelling faster and will collide with the walls of the container more frequently and with more force.
This means that there is a relationship between pressure and temperature. If a pressure gauge is connected to a flask of air and the flask is heated, a graph of pressure against temperature can be produced.
Let me start by briefing about the Celsius temperature scale. In Celsius temperature scale, the freezing point of water is taken as 0 and the boiling point of the water is taken as In Kelvin temperature scale, the zero point is shifted from freezing point of water to the absolute zero point.
Absolute zero is the theoretical lowest temperature achievable for any substance. It is a point at which all molecular movements of any substance stops. 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. Note: I have explained this in a very very simpler terms and used imaginary experiments which might not be possible in real world.
0コメント