A more thorough explanation:

Definition: Epoch (ep-uhk) refers to a specific period of time that is marked by important events or distinctive features. It can also refer to a starting point for counting memorable dates or a new computation.

Examples:

• The Industrial Revolution is considered an epoch in human history due to its significant impact on society and the economy.
• The invention of the internet marked a new epoch in communication and information sharing.
• The year 2000 is often used as an epoch for computer systems, as it marked the start of a new millennium and required updates to date calculations.

These examples illustrate how an epoch can refer to a period of time that is marked by significant changes or events. The Industrial Revolution and the invention of the internet both had a profound impact on society and are considered important milestones in history. The use of the year 2000 as an epoch for computer systems shows how an epoch can also be a starting point for counting dates or a new computation.