Population Clock
Encyclopedia
The Population Clock is the United States Census Bureau
United States Census Bureau
The United States Census Bureau is the government agency that is responsible for the United States Census. It also gathers other national demographic and economic data...

's continuously active approximations of both the population
Population
A population is all the organisms that both belong to the same group or species and live in the same geographical area. The area that is used to define a sexual population is such that inter-breeding is possible between any pair within the area and more probable than cross-breeding with individuals...

 of the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

and the world's total population. The population totals are based on the latest census information and national population estimates, which are used in the algorithms that run the two clocks.

Calculation

The calculation used to estimate the approximate timely population is;

one birth per time TW
- one death per time TX
+ one international immigrant per time TY
= overall increase (one person per time TZ).

Example

One birth every 1 minute and 56 seconds
- One death every 3 minutes and 59 seconds
+ One international migrant every 3 minutes and 11 seconds
= One person every 1 minutes and 44 seconds

Other population clocks

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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