The number 1.5 is a very important number for human existence. do you know what 1.5 means?

Number As a Fraction Rational? 5 5/1 Yes 1.75 7/4 Yes 1000 1000/1 Yes .001 1/1000 Yes −0.1 −1/10 Yes 0.111... 1/9 Yes √2 (square root of 2) ? NO ! Oops! The square root of 2 cannot be written as a simple fraction! And there are many more such numbers, and because they are not rational they are called Another famous irrational number is π): Formal Definition of Rational Number More formally we say: Fun Facts .... The ancient greek mathematician Pythagoras believed that all numbers were rational, but one of his students Hippasus proved (using geometry, it is thought) that you could not write the square root of 2 as a fraction, and so it was irrational. But followers of Pythagoras could not accept the existence of irrational numbers, and it is said that Hippasus was drowned at sea as a punishment from the gods!

When and why did the world population grow? And how does rapid population growth come to an end? These are the big questions that are central to this research article. The world population increased from 1 billion in 1800 to around 8 billion today. The world population growth rate declined from around 2% per year 50 years ago to under 1.0% per year. Other relevant research: • Births and deaths per year with UN projections • Population since 10,000 BC • Population by age group • Population by world region 10000 BCE to 2100, with UN projections • Population growth rate with UN projections • Annual population growth with UN projections • Birth rate vs. death rate • Births per year with UN projections • Births per year • Births per year, by world region • Births that are registered • Change in Global Hunger Index vs. Population growth • Child deaths per year • Children per woman vs. population growth • Deaths per year with UN projections • Deaths per year, by age group • Deaths per year, by world region • Fertility rate: children per woman with UN projections • Natural population growth with UN projections • Natural population growth rate vs. child mortality rate • Natural population growth rate vs. median age • Number of one-year-olds • Population since 10,000 BC, Marimekko • Population 10000 BCE to 2100, with UN projections • Population 1950 to 2100, with UN projections • Population by age group 1950 to 2100, with UN projections • Population growth rate by level of developme...

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• July 26, 2022 • July 26, 2022 • March 12, 2022 • December 12, 2021 • October 1, 2021 • June 23, 2021 • June 22, 2021 • June 21, 2021 • June 17, 2021 • May 19, 2021 • May 19, 2021 • May 13, 2021 • May 10, 2021 • March 21, 2021 • March 15, 2021 • March 14, 2021 • March 13, 2021 • March 12, 2021 • March 12, 2021 • February 9, 2020 • April 2, 2019 • June 26, 2018 • June 24, 2018 • June 19, 2018 • June 18, 2018 Que=>1 13 Most important numbers in the Universe that define our existence? Ans=> Some numbers such as your phone number or your Aadhaar number play an important role in our lives & are more important than other numbers to us. Here we too will discuss a few numbers which are important on the scale of the universe, In fact, these numbers define our universe, makes our existence possible and even will decide the fate of the universe. Table of Contents=> Go Directly • • • • • • • • • • • • • • 1. Universal Gravitational Constant G = 6.67408 × 10 -11 m 3 kg -1 s -2 According to 1 and m 2), and inversely proportional to the square of the distance, r, (inverse-square law) between them. It is an interesting fact that the 2. Speed of Light c=299,792,458 m/s Albert Mitchellson and Edward Morley showed that the speed of light does not depend on its direction. This finding allowed Einstein to postulate his most famous work which in a way revolutionized Science, yes, we are talking about, Theory of Relativity. This was the most important discovery of the 20th century and probably ...

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