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Matrixman13
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Am i right when i say its impossible to reach absolute zero? Because of the uncertainty principle, you would need an infinite amount of energy to keep a particle completely still. Thanx
Matrixman13 said:Am i right when i say its impossible to reach absolute zero? Because of the uncertainty principle, you would need an infinite amount of energy to keep a particle completely still. Thanx
primal schemer said:Hi,
Just wondering why you need an infinite amount of energy to keep the particles still. How would you use energy to restrict the movement of particles??
Thanks,
PS
Gara said:I've heard that IF atoms got to 0°K, they would cease to exsist. Is this true, and why?
Matrixman13 said:Am i right when i say its impossible to reach absolute zero? Because of the uncertainty principle, you would need an infinite amount of energy to keep a particle completely still. Thanx
I side with the dissenters. HUP has everything to do with absolute zero. All atoms have a zero point energy state that is above absolute zero. This means they still radiate [albeit in the extremely long wavelengths] and still have a blackbody temperature. This is one instance where quantum theory and GR do agree.Atheist said:Assuming with absolute zero you talk about temperature :
Uncertainty has absolutely nothing to do with temperature:
Very good questions.Atheist said:@Chronos:
Three questions and one suggestion:
q1) Where is the connection between uncertainty and temperature in your post? Uncertainty never appears except at the point where you claim that "it has everything to do with absolute zero".
q2) If an atom in it´s energetically lowest state emits a photon (radiates): What state does it change to?
q3) Could you please show from my 1st post where you think I am wrong? Simply saying "I disagree" is ok, but doesn´t help anyone, i think.
s1) Please take a bit more time to explain what you want to say. Here, you jump from uncertainty over Thermodynamics (very well knowing that I, for example, don´t see any connection) over to Relativity (why??) within four sentences. Also, your posts (this mainly reffers to one of your posts that raised my attention just yesterday) sometimes are very vague and leave room for a lot of interpretation.
Chronos said:(snip)
q1] If you define temperature as a measure of the intensity of motion [kinetic energy], and absolute zero as the point at which all motion ceases, then (snip)
Absolute zero is the lowest possible temperature on the Kelvin scale, which is equivalent to -273.15 degrees Celsius or -459.67 degrees Fahrenheit. At this temperature, all molecular motion stops and it is considered to be the point of lowest thermal energy in a substance.
According to the third law of thermodynamics, it is impossible for any system to reach absolute zero through a finite number of steps. As the temperature decreases, the amount of energy required to further decrease the temperature also increases, making it increasingly difficult to reach absolute zero.
At absolute zero, matter exhibits unique properties. All molecular motion stops, and the atoms become arranged in a perfect crystal lattice. This is known as a Bose-Einstein condensate and can only occur at temperatures close to absolute zero.
No, absolute zero cannot be achieved artificially. While scientists have been able to reach temperatures very close to absolute zero in laboratory settings, they have not been able to achieve it exactly. Additionally, the technology and resources required to reach absolute zero would be immense and impractical.
Studying absolute zero has helped us understand the behavior of matter at extremely low temperatures, which has led to advancements in fields such as cryogenics and superconductivity. It has also allowed us to develop technologies such as refrigeration and MRI machines that rely on the properties of matter at low temperatures.