Yeah.That is exactly what I am confused about that article a long time ago.hilbert2 said:You can't have any causal signal propagate faster than speed of light.
While it may seem like liquid helium can conduct heat at an infinite speed, this is not the case. The speed at which heat is conducted in a material is determined by its thermal conductivity, and liquid helium actually has a relatively low thermal conductivity compared to other materials. However, at extremely low temperatures, the thermal conductivity of liquid helium does increase significantly, making it appear as though it can conduct heat infinitely fast.
The thermal conductivity of liquid helium is actually quite low compared to other materials. For example, copper has a thermal conductivity that is about 100 times higher than liquid helium at room temperature. However, at extremely low temperatures, the thermal conductivity of liquid helium can increase significantly and surpass that of other materials.
The thermal conductivity of liquid helium is affected by several factors, including temperature, pressure, and the purity of the liquid. As the temperature decreases, the thermal conductivity of liquid helium increases. Similarly, increasing the pressure can also increase the thermal conductivity. Additionally, impurities in the liquid helium can decrease its thermal conductivity.
The thermal conductivity of liquid helium is important because it affects how heat is transferred in various applications. For example, in cryogenic systems that use liquid helium, the thermal conductivity plays a crucial role in how efficiently heat is transferred and managed. Understanding the thermal conductivity of liquid helium is also important for studying and exploring extreme low temperature environments.
Yes, the thermal conductivity of liquid helium can be increased by manipulating the temperature and pressure, as well as by purifying the liquid. Additionally, certain techniques such as adding tiny particles of a material to the liquid can also increase its thermal conductivity. However, the thermal conductivity of liquid helium will never be infinite, as it is limited by the laws of thermodynamics.