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The notion of doubling time dates to interest on loans in Babylonian mathematics. Clay tablets from circa 2000 BCE include the exercise "Given an interest rate of 1/60 per month (no compounding), come the doubling time." This yields an annual interest rate of 12/60 = 20%, and hence a doubling time of 100% growth/20% growth per year = 5 years.
The doubling time (t d) of a population is the time required for the population to grow to twice its size. [24] We can calculate the doubling time of a geometric population using the equation: N t = λ t N 0 by exploiting our knowledge of the fact that the population (N) is twice its size (2N) after the doubling time. [20]
Foreign population in the Czech Republic in 2020. According to the Czech Statistical Office as of 31 December 2020 there were 632,570 legal foreign residents in the Czech Republic (5.1% of the total population). [33] Residents from Ukraine are the largest group (165,356), followed by residents of Slovakia (124,544). There are also Asian ...
The Czech Republic's population has an average age of 43.3 years. [187] The life expectancy in 2021 was estimated to be 79.5 years (76.55 years male, 82.61 years female). [188] About 77,000 people immigrate to the Czech Republic annually. [189]
About a third of the area of the Czech Republic is covered by forests. The Czech Republic also possesses Moldauhafen, a 30,000 m 2 enclave in the middle of Hamburg docks in Germany, which was awarded to Czechoslovakia by Article 363 of the Treaty of Versailles to allow the landlocked country a place where goods transported down river could be ...
Advanced Placement (AP) Human Geography (also known as AP Human Geo, AP Geography, APHG, AP HuGe, APHug, AP Human, HuGS, AP HuGo, or HGAP) is an Advanced Placement social studies course in human geography for high school, usually freshmen students in the US, culminating in an exam administered by the College Board. [1]
Graph of world population over the past 12,000 years . As a general rule, the confidence of estimates on historical world population decreases for the more distant past. Robust population data exist only for the last two or three centuries. Until the late 18th century, few governments had ever performed an accurate census.
The Prague metropolitan area (Czech: Pražská metropolitní oblast) is the metropolitan area of Prague, the capital city of the Czech Republic. The population is 2,264,690 as of 2024. [ 1 ] It is the most populous metropolitan area in the country.