Tasks of building

Published June 29, 2016

Tasks of building

The first tasks of building originated in ancient times. They emerged from the economic needs of the person. Already the ancient architects and surveyors had to solve simple problems on construction related to their profession...

Million

Published August 17, 2016

Million

Million is the oldest numerical giant. Often the word "million" is used as a metaphor to refer to a very large number (the number of something). To feel the enormity of this number, it is necessary to spend a little time on the "arithmetic gymnastics". This "gymnastics" develops the ability to properly assess the size of large numbers...

Number 365

Published September 04, 2016

Number 365

First of all, the great number of 365, which determines the number of days in the year. When divided by 7 it gives a remainder of 1. This is insignificant, it would seem, a feature of 365 is of great importance for our seven-day calendar. From it depends what every ordinary (non-leap) year ends with the day of the week, as it had begun...

The Pyramid of Cheops

Published September 25, 2016

The Pyramid of Cheops

The highest pyramid of Ancient Egypt is the pyramid of Cheops. For five thousand years, it is the most amazing building, preserved from the ancient world. Pyramid of Khufu has a height of almost 150 meters, and its base covers an area of 40000 square meters. m. It is composed of 200 rows of giant stones. It would be strange if such a huge structure...

Significant numbers

Published September 25, 2016

Significant numbers

The doctrine of the approximate calculations significant digits are all numbers except zero, and zero, but if he stands between the other significant figures. So, in the days of 3700 and 0.0062 all zeros are insignificant. The numbers 105 and 2006, the zeros are significant figures. Among 0.0708 first two zero - insignificant, and the third is zero - meaning...

Number 999

Published September 25, 2016

Number 999

An interesting feature is the number 999 appears in the multiplication of it any other three-digit number. It turns out a six-digit product. The first three digits of it is a multiplied number minus one, and the remaining three numbers - "add-on" first to 9...

Burning

Published September 25, 2016

Burning

Burning is a complex physical and chemical process of converting raw materials into products of burning. Burning reactions are accompanied by intense heat release. The chemical energy stored in the components of the original mixture, can be isolated in the form of light and heat radiation...

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