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Kalrag
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I hear how people create superconductors by taking a metal and freezing it to Absolute Zero(0 Kelvin). What are some methods to get this sort of tempuature? Can anyone help?
Kalrag said:I know but how do they get "near" absolute Zero? Like what are the methods.
Huh? Are you referring to negative kelvin? If so, I guess that while negative kelvin would mathematically be lowest record temperature, in that a negative numbers are less than positive numbers, negative kelvin temperatures are actually "hotter" than positive temperatures.NobodySpecial said:I think the record lowest temperature is probably a magnetic fridge.
Still the same concept, magnetizing a piece of material causes it to heat up - taking heat in from the surroundings , you take it out of the magnetic field and it cools down giving off that heat which you then extract.
Absolute zero is the lowest possible temperature on the Kelvin scale, which is equivalent to -273.15 degrees Celsius. In superconductivity, absolute zero is important because it is the temperature at which materials exhibit zero electrical resistance, allowing for the flow of electricity with zero energy loss.
Some common methods include using cryogenic liquids such as liquid helium or liquid nitrogen, employing dilution refrigerators, and utilizing adiabatic demagnetization. These methods involve cooling the material to extremely low temperatures to achieve superconductivity.
No, it is impossible to reach absolute zero in real-world scenarios due to the laws of thermodynamics. However, scientists have been able to reach temperatures close to absolute zero, which has allowed for the observation and study of superconductivity.
Yes, some potential risks include the cost and complexity of cooling systems, as well as the possibility of damaging or destroying the material being cooled. Challenges include maintaining the low temperature and managing thermal insulation and energy transfer.
Superconductors at absolute zero have practical applications in various fields, including medical imaging, transportation, and energy transmission and storage. They can also be used in scientific research for studying quantum phenomena and advancing technologies.