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Modern Physics
t1/2=ln⁡2λ=0.693λt_{1/2} = \frac{\ln 2}{\lambda} = \frac{0.693}{\lambda}

The time required for half of the radioactive nuclei to decay.

Variables

t_{1/2}
Half-life
s
\lambda
Decay constant
s⁻¹

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Common questions

What is the Half-Life formula?

Half-Life is written t₁/₂ = ln 2/λ= 0.693/λ. The time required for half of the radioactive nuclei to decay. It belongs to Modern Physics, under Nuclear Physics.

What are the units in t₁/₂ = ln 2/λ= 0.693/λ?

In SI units, t_{1/2} is half-life, measured in s; \lambda is decay constant, measured in s⁻¹.