A "shake" is a unit of time that is typically used in nuclear physics and is defined as \(10^{-8}\) seconds, or 10 nanoseconds. The term originated from the idea that the time it takes for a nuclear explosion to produce significant observable effects is on the order of this duration. It is a non-SI unit and is primarily used in contexts related to radiation and nuclear processes, where precise measurements of time intervals in the nanosecond range are often necessary.
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