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Molecular motion in a gas would cease
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What is the lowest possible temperature on the Celsius scale on the kelvin scale?
In theory it is 0 Kelvin. However, that temperature is physically impossible to attain. The current (2017) world record, set in 1999, stands at 100 picokelvins (pK), or 0.000 000 000 1 of a kelvin.
Why is the kelvin temperature scale useful?
Our conventional Celsius and Fahrenheit scales of temperature are related to things that we find in our own experience. Zero degrees Celsius is the temperature of freezing water; zero degrees Fahrenheit is the coldest temperature that Dr. Fahrenheit could achieve (in the 1700s) by mixing ice and salt together. The "100 degree" mark in Celsius is the boiling point of water, while 100 degrees Fahrenheit was normal body temperature. (He was a doctor, not a physicist; he got it wrong by 1.4 degrees.) The Kelvin scale is referenced to "absolute" zero, the impossible temperature at which all molecular motion would stop. So with the Kelvin scale, you can measure any temperature and all your numbers will be positive. (Makes the math easier.) The temperature of "absolute zero" is equal to -273 degrees Celsius, and the size of a degree is the same in the Kelvin and Celsius scales. So a nice day here on Earth would be around 300 degrees Kelvin.
What are the pros and cons of using Fahrenheit?
Pros:Fahrenheit may be familiar to the population of the country that uses it and change is always difficult;Fahrenheit has smaller degrees than Celsius so there is less need to use decimals;...Cons:Celsius is used in science so all Fahrenheit temperatures have to be converted to Celsius when teaching or using scienceKelvin which is the absolute temperature scale has the same unit intervals as Celsius but Fahrenheit has to be converted using the not easy to remember formula: K = (F - 32) x5/9 + 273.15Fahrenheit is slightly less "intuitive" when it comes to the boiling point of water 212 oF compared to 100 oC and freezing point of water 32 oF or 0 oC...Points of Interest:Fahrenheit uses a mixture of brine+ammonia to obtain zero and body temperature as 100Celsius uses the melting point of water as zero and 100 as the boiling point of water to get its degree intervalsKelvin is an absolute temperature scale with zero corresponding to the theoretical point of no energy. 0 K = -273.15 oC. (Note Kelvin does not use the degree symbol)
The annual range of temperature may be described as the difference between?
The annual range of temperature may be described as the difference between the temperature of the coldest month and the hottest months temperature.
Why is the Kelvin temperature scale rather than the Celsius temperature scale used in science?
The celsius scale of temperature is based on the freezing and boiling point of water. This is very convenient for every day use as most things we deal with are in this range and those which are not are usually pretty close. However when you think about it the 2 defined points are pretty arbitary, they are based on the phase tranision of a single substance. OK, a pretty common substance on Earth but still just an arbitrary substance. Now for a bit of physics - What is temperature? Temperature is a measure of the average kinetic energy (energy of movement) of molecules in a substance? When things are hoter the molecules are moving faster on average, when things are colder the molecules are moving slower on average. Given that temperature is a measure of the average kinetic energy there is a more logical definition for the zero point. When the molecules have zero kinetic energy. This is the definition of zero Kelvin. Unfortunately there is no similarly logical maximum temperature. The Kelvin scale is therefore a bit of a compromise, it uses the same unit as the Centigrade scale but offsets the zero point by 273.13 degrees. None the less it is still a more logically defined unit than the Centigrade and has replaced it as the SI unit for temperature. 0'K = -273.13'C 273.13'K = 0'C 373.13'K = 100'C
What is the lowest temperature on the Kelvin scale?
Zero. Other scales like Celsius and Fahrenheit have negative numbers. Kelvin starts at zero.it may actually be absolute zero
What is the third law of thermodynamics as defined by Ludwig Boltzmann?
"As a system approaches absolute zero, all processes cease and the entropy of the system approaches a minimum value.""it is impossible by any procedure, no matter how idealised, to reduce any system to the absolute zero of temperature in a finite number of operations".Lewis (of Lewis acids and bases fame) and Merle Randall phrased it as"If the entropy of each element in some (perfect) crystalline state be taken as zero at the absolute zero of temperature, every substance has a finite positive entropy; but at the absolute zero of temperature the entropy may become zero, and does so become in the case of perfect crystalline substances."
What is the lowest possible temperature on the Celsius scale on the kelvin scale?
In theory it is 0 Kelvin. However, that temperature is physically impossible to attain. The current (2017) world record, set in 1999, stands at 100 picokelvins (pK), or 0.000 000 000 1 of a kelvin.
Where on earth can you find absolute zero?
Neptune (Pluto was, but it is not a planet anymore. But, absolute zero is unreachable. Absolute zero is the temperature it would be if there was no matter. And since matter is everything, absolute zero is abolutly unreachable.
How do you get the absolute zero temperature?
All energy must be removed from the atoms. All atoms in the substance you want to reach absolute zero have to remain absolutely still, meaning that not even a single atom can move. If you take a piece of paper, you may think that the atoms of the paper are not moving, but they are actually vibrating. Thus, for a solid object to reach absolute zero, all atoms must stop vibrating.
Why is -273 C is called absolute zero?
Absolute zero is the theoretical temperature at which all substances have zero thermal energy. Originally conceived as the temperature at which an ideal gas at constant pressure would contract to zero volume, absolute zero is of great significance in thermodynamics and is used as the fixed point for absolute temperature scales. Absolute zero is equivalent to 0 degrees Kelvin, -459.67 degrees F, or -273.15 C.The velocity of a substance's molecules determines its temperature; the faster the molecules move, the more volume they require, and the higher the temperature becomes. The lowest actual temperature ever reached was two-billionth of a degree above absolute zero. It was achieved by a team at the Low Temperature Laboratory in the Helsinki University of Technology, Finland, in October, 1989.Having a limiting temperature has several thermodynamic consequences for example at 0 kelvin all molecular motion does not cease there is just no energy available for transference to other systems it is therefore more accurate to say that at absolute zero molecular energy is minimal if we say that all substances have zero energy this is a violation of the Heisenberg Uncertainty Principal so it is impossible to have zero energy.The opposite of absolute zero is called Planck Temperature.As of now it is the highest possible temperature that matter can exist at.It is approximately 1.41679 x 10^32 Kelvin.Beyond this temperature everything turns to energy, all subatomic particles break down and become individual black holes destroying space and time.The universe has already reached this temperature once during the first instant of the Big Bang.
Can you able to achieve hypothetical temperature?
Scientist can achieve almost hypothetical absolute zero using laser cooling trapping atom motion. The lowest temperature achieve is now approximately 0.00015 K. For absolute 0 K without any digit, it would be a very challenging task that may never be achieve.
Does the state of any gas changes at absolute zero?
Absolute zero is the temperature at which all atoms practically stop moving (technically the atoms may still move, but they don't have enough energy to transfer their own movement on to the next atom). Because a gas is made up of atoms which move, the gas will become a solid when it reaches absolute zero (becuase the atoms in solids don't move).
How can you use a number line to solve an absolute value equation?
An absolute value may not need a number line to solve. Absolute value means the distance form zero regardless of the sign.
Why is the kelvin temperature scale useful?
Our conventional Celsius and Fahrenheit scales of temperature are related to things that we find in our own experience. Zero degrees Celsius is the temperature of freezing water; zero degrees Fahrenheit is the coldest temperature that Dr. Fahrenheit could achieve (in the 1700s) by mixing ice and salt together. The "100 degree" mark in Celsius is the boiling point of water, while 100 degrees Fahrenheit was normal body temperature. (He was a doctor, not a physicist; he got it wrong by 1.4 degrees.) The Kelvin scale is referenced to "absolute" zero, the impossible temperature at which all molecular motion would stop. So with the Kelvin scale, you can measure any temperature and all your numbers will be positive. (Makes the math easier.) The temperature of "absolute zero" is equal to -273 degrees Celsius, and the size of a degree is the same in the Kelvin and Celsius scales. So a nice day here on Earth would be around 300 degrees Kelvin.
What temperature is the freezing point of water in the celsius scale?
It depends of the pressure, but at normal pressure, 1.01325 Pa, the water freezes at 0°C.
May you have 20 examples of radiation heat?
Any object with a temperature above absolute zero - in other words, basically any object - will radiate heat. The amount of heat radiated is roughly proportional to the fourth power of the absolute temperature. Listing examples is rather boring; just think of any object. A person, a house, planet Earth, the Sun, a tree, etc.
