3 ms·
Talking about physical entropy (Boltzmann) or information entropy (Shannon), in either case we must consider the system or channel. Entropy only has meaning in
by lovemenot 5y ago
Talking about physical entropy (Boltzmann) or information entropy (Shannon), in either case we must consider the system or channel.
Entropy only has meaning in respect of a system. There is no "universal* application of the second law.
Entropy within a system may very well decrease so long as more entropy is exported from that system.
Living organisms import low entropy such as food. And they export higher entropy.
The balance in a notional system that encompasses both the organism and its energy source, wrt beyond that system, will be a net inrease in its entropy.