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abstraction > mathematical concept > number > quantity > time > lifetime
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lifetime
(τ, mean life)
subjectfact 
lifetimehas symbol τhas source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:33:26.0
has equivalent half-life / ln 2has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:33:26.0
has synonym mean lifehas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:26.0
see also half-life2001-09-27 09:33:26.0
has definition The time it takes for a sample of identical particles to decay to 1/e of its initial population.has source: Coughlan, G.D., Dodd, J.E. 1999 The Ideas of Particle Physics, Cambridge University Press, 2001-09-27 09:33:26.0
is a kind of time2001-09-27 09:33:26.0
timehas unit time unit2001-09-27 09:33:25.0
numberhas value2001-09-27 09:32:57.0