The reason for this behavior on the part of ostriches is ignored by everyone, why? Simple … because it’s false! Indeed, the popular belief that ostriches put their heads in the sand in case of danger, is wrong and has never been recorded.
However, when there is no other possibility of escape evident, a bird can lie down on the ground with head and neck stretched forward and remain firm in the hope that it is ignored by his enemy. This strategy has similarly taken by a bird in hatching …

This has resulted from a compromise. Initially, months were mostly 29 days long and the average length of a month was 29.5 days which is the time taken by the Moon to orbit the Earth. However, this resulted in a year of only 354 days while the orbital period of the Earth is 365.2422 days. As a result, the calender became out of sync with seasons which was bad. This was initially corrected in an arbitrary way by adding a 13th month, but soon the calender was thrown into severe …

In onion there are molecules that contain one or more of sulfur atoms: the organic sulphides. When cutting the onion these sulphides are combined with another substance present in different layers, “the allinasi enzyme”, which degrades amino acids and volatile odorless. These amino acids, reacting with water covering the cornea, are transformed into acids, mainly sulfuric and sulphide. As corrosive substances, the eye tries to rid activating the lacrimal glands. From the’90 in different parts of the world  , it attracts the attention of scientists, agronomists and geneticists. How …

The history of fractals in the strict sense is fairly recent. Suddenly opened in 1975 with the revolutionary publication “A Theory of Fractal Sets” of mathematician Benoît Mandelbrot, which became the basis of its fundamental text and manifest.

In “The Fractal Geometry of Nature” Mandelbrot, has coined the term fractal which derives from the Latin word “Fractus” (split), because the size of a fractal is not whole. The fractal geometric figures are characterized by repeated indefinitely until the same reason on an ever smaller scale.

The characteristic of these figures, a feat …

With the birth of mechanical watches, around the thirteenth century, it was established the habit of splitting time in 60 smaller parts, all equal, each of which was called in Latin “pars minuta prima” which means “first small part” then cut short ‘minutes’, and these in turn were divided into 60 shares still other smaller, each of which was called, in Latin, secunda pars minuta (second small part), then cut short’ second ‘.
The choice of the number 60 is traced back to Sumerian, which had divided the circle in 360 …