Why is the breath hot and the breath cold?
(/) Because the speed with which the air moves is different in the two situations. When you just open your mouth for the breath to come out, the air velocity is low. When you set the “beak” to blow, the…
(/) Because the speed with which the air moves is different in the two situations. When you just open your mouth for the breath to come out, the air velocity is low. When you set the “beak” to blow, the…
You argonauts they were the sailors who, in Greek mythology, accompanied the hero Jason on his journey to Colchis (where Georgia is today) to rescue the Golden Fleece. The story is part of the Greek myth Jason and the argonauts,…
It was a series of conflicts, starting in 1917, that toppled the Russian empire and brought Vladimir Lenin’s Bolshevik Party to power. Newly industrialized and suffering from the 1st World War, Russia had a large mass of workers and peasants…
Tasting is the act of evaluating flavors. This profession requires a refined palate and a lot of study to know how to appreciate qualities and look for defects in a product. On the menu of Brazilian tasters, the main items…
The seed – the mature and fertilized ovule of the plant – begins to grow by absorbing water from the soil and consuming its own reserves of nutrients. When the first leaves appear, the plant begins to generate nutrients through…
You may have seen in recent days an animated circle (or a video on social networks) with people trying to make a strange gesture with their hands. Or, if you already know what we’re talking about, you probably failed on…
The slutty on small and big screens follows a basic rule: you don’t have to see it to believe it. Directors use a number of filming aids to make the viewer believe that the actors are really kicking ass. The…
Surgical stitches are most often done the old-fashioned way: with a needle and thread. “The stitches – or sutures – serve to approximate the edges of wounds caused by sharp objects in surgeries or accidents”, says Dulce Martins, plastic surgeon…
ILLUSTRATIONS abacrombie ink LIFE CYCLE Egg It is between 0.5 and 1 m high and has an impact resistant shell. Internally, it is very vascularized, to oxygenate the embryo, which is fed by a nutritious material until hatching. When the…
640px-Codex_Gigas_facsimile It is a book divided into four parts, which argues that Satan is a force of nature and can be invoked with magical rituals. Published in 1969, the work was reprinted 30 times and is the most influential of…