Exact(1)
The time of decay is proportional to the natural logarithm (represented by ln) of the ratio of D to P. In short, one need only measure the ratio of the number of radioactive parent and daughter atoms present, and the time elapsed since the mineral or rock formed can be calculated, provided of course that the decay rate is known.
Similar(59)
Remaining ties were broken based on the time at which all samples of a character exhibit decay, then the time of onset of decay.
At this time, the time of absolute decay, only art can give us a way out.
Measurable sparks received additional annotation including a horizontal line segment marking the base of the spark and a vertical line transecting the time of half decay.
The induced torque and the characteristic time of decay are presented as a function of the object's magnetic tensor.
This requires that the characteristic time dt is quite a bit larger than the characteristic time of decay for the time correlations between gates activity τ C. Summarizing, we must have 0 < τ C τ P < d t < δ.
The authors observed a wide variation in the time constants of decay of firing activity across neurons, with more distant neurons showing a greater difference in time constants.
The antibody concentration in the i.p. fluid was assumed to be equal to the antibody concentration in the injected solution during the time of the 213Bi decay.
The decay time constant was the time to decay to 80% of the peak amplitude of a postjunctional spikelet/AP.
For currents decaying monoexponentially, T0.37 is equivalent to the time constant of decay.
When the decay was biexponential, T0.37 is used as a simple measure to compare the time course of decay in these cells and others.
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