Unsinkable log

Water - it's human nature, every person on 80% consists of water. In addition, water - that's life. It is for this reason not only scientists, but even the most ancient of our ancestors wondered water of life: why fish swim in the water why various algae grow? Why even a small pebble in the water sink and a huge and heavy log - no? At first glance, this question is quite significant and inexplicable, in any case, the common man. It turns out that a similar phenomenon is very reasonable physical explanation. So why, in reality, does not sink log? And all the matter density. Thus, the density of the timber is significantly less than the density of water, which is 1 g / cm3. In many voids wood, including intercellular. To increase the density of wood, it would have to be very carefully compress to the result of woody material. Then it would have had a greater density than the log. The more moisture that accommodates a timber or otherwise, so it is more dense. Accordingly, the sinking trees will be in the zone with more humid than dry. Although there are exceptions. In fact, there are trees that sink in water, indicating their higher density than water. Such trees are called "iron". Among them: African azobe, ebony wood, Cumaru, Parrot Persian and many others. In general, these trees are not typical in our climate. Trees with such a high density of very resistant to various natural processes, including rotting. If the boat out of the tree can not be done, the furniture - is quite real. This is one of the most quality materials tree species. Naturally, such a material and very expensive, so not everyone on the planet afford this luxury in the house. See also: Why say "money does not smell"? Why lie to the press called a duck? Why soap foam? Why Einstein showed language? Why do we hear in a seashell "sound of the sea"? Why not recommended while reading a book and listening to music?

Source: po4emu.ru/index.php?id=719