exponential decay

Radioactive isotope behavior

Exponential decay describes a quantity that decreases at a rate proportional to its current value—the more there is, the faster it shrinks.

Radioactive materials decay exponentially, losing half their mass in each half-life.

The term extends to anything that diminishes rapidly at first, then tapers: Interest in the scandal showed exponential decay after the first week.

Related

half-life · drop · learning curve · attenuation · isotope · nuclear fallout · differential equation · mathematical model · physics · carbon-14 dating · natural logarithm · chemistry · atomic nucleus · radiometric dating · radionuclide · entropy · drop-off · logarithmic scale

Categories
Opposites
direction of change

exponential decayexponential growth

Quantity multiplying proportionally over time

geometric growth · compound growth · growth · increase · accumulation

stability vs. change

exponential decayequilibrium

State of balance

stability · steady state · constancy · stasis · permanence

rate of change character

exponential decaylinear growth

Increase at constant rate

linear progression

Family

exponential, decay, exponent, exponents, exponentially, decays, decayed, decaying, proponent

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Used worldwide · Timeless · Abstract · Rated G