Assertion: strontium 90's life | /r/HasProperty | the time
Facets:
Source sentences:
text: The radioactive half-life is the time that it takes for half of a radioactive strontium isotope to give off its radiation and change into a different element.
text: The half life of the radio active substance is the time require the half the substance to decay.
text: The mean life (τ) is the time required to achieve 63% of the growth of the Earth with exponentially decreasing rates of accretion.
text: Recall that a first-order process has a characteristic half-life, which is the time required for half of any given quantity of a substance to react.
text: The half life of the radio active substance is the time require the half the substance to decay.
text: It has a half-life (the time it takes for half the amount of a sample to decay) of approximately 5730 years.
text: Recall that a first-order process has a characteristic half-life, which is the time required for half of any given quantity of a substance to react.