Chain reaction
Meaning
A process in which one event triggers a series of similar events, each caused by the preceding one, often with significant or accelerating consequences.
Origin
While the idea of a linked sequence of events is ancient, the term "chain reaction" gained its scientific and popular prominence in the 20th century. It became central to understanding chemical processes, but truly entered the global lexicon with the advent of nuclear physics. Scientists discovered that splitting an atom could release neutrons, which in turn could split more atoms, creating a self-sustaining and accelerating release of energy. This groundbreaking discovery, leading to the development of nuclear power and weapons, cemented "chain reaction" as a powerful metaphor for any escalating sequence of events, especially those with dramatic or uncontrollable outcomes.
Examples
- The manager's resignation set off a chain reaction of departures throughout the department.
- A small error in the code can sometimes lead to a chain reaction of system failures across the network.