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mean life
noun
the average time that an unstable particle or nucleus survives before it decays.
mean life
noun
τ.physics the average time of existence of an unstable or reactive entity, such as a nucleus, elementary particle, charge carrier, etc; lifetime. It is equal to the half-life divided by 0.693 15
Example Sentences
“Really, it can mean life or death in a lot of cases where you don’t get the information, where it’s not translated in a city and county like Los Angeles.”
"He killed my son. Life should mean life, however I understand the judicial system, and there has to be a tariff set in place," she said.
During natural disasters and extreme weather, employers’ choices can sometimes mean life or death, said David Michaels, a professor at the Milken Institute School of Public Health and a former assistant secretary of labor for the Occupational Safety and Health Administration.
“That is hugely significant, because if that happens twice in our solar system, it could mean life is really common,” he says.
Collins said she was appalled to see online trolling from "armchair admirals, people who will never have to make decisions which mean life or death for their subordinates".
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