91Ó°ÊÓ

The overall energy of the system and its environment grows when an irreversible event occurs. To establish whether or not a hypothetical process is reversible, the second law of thermodynamics can be applied. When there's no dissipation, a process appears to be reversible.The entropy of the cosmos remains unaltered in a reversible process, whereas the entropy of the universe grows in an irreversible process. It also rises when a quantifiable non-spontaneous process occurs. Because energy continually goes downward, entropy increases.

The entropy of the universe increases an example of irreversible processes are:
$\left(1\right)$Allowing a hot cup of tea to cool on its own.

$\left(2\right)$An egg that has fallen on the floor and cracked open, spilling its contents.

$\left(3\right)$In general, anything that cannot occur spontaneously in a time-reversed form is irreversible. If you leave a cup of tea alone, it will never heat up. A broken egg, likewise, will never rejoin itself.