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- Doubling_time abstract "The doubling time is the period of time required for a quantity to double in size or value. It is applied to population growth, inflation, resource extraction, consumption of goods, compound interest, the volume of malignant tumours, and many other things that tend to grow over time. When the relative growth rate (not the absolute growth rate) is constant, the quantity undergoes exponential growth and has a constant doubling time or period, which can be calculated directly from the growth rate.This time can be calculated by dividing the natural logarithm of 2 by the exponent of growth, or approximated by dividing 70 by the percentage growth rate (more roughly but roundly, dividing 72; see the rule of 72 for details and a derivation of this formula).The doubling time is a characteristic unit (a natural unit of scale) for the exponential growth equation, and its converse for exponential decay is the half-life.For example, given Canada's net population growth of 0.9% in the year 2006, dividing 70 by 0.9 gives an approximate doubling time of 78 years. Thus if the growth rate remains constant, Canada's population would double from its 2006 figure of 33 million to 66 million by 2084.".
- Doubling_time wikiPageExternalLink populationgrow.htm.
- Doubling_time wikiPageExternalLink doubling-time-calculator.
- Doubling_time wikiPageID "6713437".
- Doubling_time wikiPageRevisionID "590379984".
- Doubling_time hasPhotoCollection Doubling_time.
- Doubling_time subject Category:Exponentials.
- Doubling_time type Abstraction100002137.
- Doubling_time type Exponential113789462.
- Doubling_time type Exponentials.
- Doubling_time type Function113783816.
- Doubling_time type MathematicalRelation113783581.
- Doubling_time type Relation100031921.
- Doubling_time comment "The doubling time is the period of time required for a quantity to double in size or value. It is applied to population growth, inflation, resource extraction, consumption of goods, compound interest, the volume of malignant tumours, and many other things that tend to grow over time.".
- Doubling_time label "Doubling time".
- Doubling_time label "Generationszeit".
- Doubling_time label "Temps de doublement".
- Doubling_time sameAs Doba_zdvojení.
- Doubling_time sameAs Generationszeit.
- Doubling_time sameAs Temps_de_doublement.
- Doubling_time sameAs m.0gjv5d.
- Doubling_time sameAs Q1424376.
- Doubling_time sameAs Q1424376.
- Doubling_time sameAs Doubling_time.
- Doubling_time wasDerivedFrom Doubling_time?oldid=590379984.
- Doubling_time isPrimaryTopicOf Doubling_time.