snow is noisy

Scientists have found that at the time fell into the water every snowflake sounds are not audible to humans. like the roar of the fire truck siren of an approaching sound of a water mark was reached and then down, it all happened about a tenth of thousands of seconds. Granules rain or lumps of ice water will penetrate the water surface but flowers of lighter snow will remain on it, but soon the snow melts and the flowers there was a roar of those mentioned above. It has been observed approximately fifteen years ago but not taken seriously, but in recent years has made this noise annoyed biologists in Alaska that uses sonar to track the migration of salmon. when the noise of the snow that fell over the signal from the fish fish observation operation must be stopped. What causes the phenomenon? A magazine explains that the snowflakes floating in the water there is noise in the water but when the frost melts, water is sucked up by capillary action at this time may be detached from the bubble of water frost or trapped by rising waters, any attempt to achieve a balance vibrating gelebung with its environment, that's when they issue such as sound waves ring a bell, but at a much higher tone

Chinese nets on the coast of india

I once read a book but I am sorry to have forgotten, about ancient Chinese culture that left behind in India. on the west coast of India, 20 km from the southern tip of India subbenua, lies the city of kochi, formerly Cochin, along both sides of the bay tides are unique chinese mesh with its bracket, the net how it got there? Chinese people living in the area since the eighth century BC and it is estimated that the Chinese merchants at the time of Kublai Khan who first brought this type of netting to Cochin before the year 1400, there are many fish that can be captured near shore waters around Cochin, so fishing gear human-powered high-rise is in use for over a century, before the Arabs throw him out of there. After the Chinese go, the nets were removed, but in the early sixteenth century the Portuguese arrived and drove the Arabs, it seems potugis person who introduced the back net at Cochin, brought from the island of Macau with a Portuguese colony when it is precisely in southeastern China . although kon, sepnya already many centuries, Chinese nets still function properly without changing the design or how it works, and it continues to support the mesh nets of the fishermen livelihood and providing food for many people, actually catch one of the nets can feed a village but effective than the mesh is also beautiful, especially the graceful silhouette against a background of golden horizon at sunrise or sunset

How It Works ..........China is very large nets is to use a fulcrum and ballast to compensate for load and haul nets, nets kalu is not being used and the jib is lifted from the water, fishing starts early morning and lasted about four or five hours, the net slowly lowered into the water to does this fisherman to adjust the ballast on the other end of the counterweight system atu crew chief fisherman walking along the support center, the net is left in water for fifteen minutes to 20 minutes and then slowly lifted her scoop up the fish that swim near the shore, through the experience of many years chairman of the crew know when to pull the net. when the crew chief gave the order, the crew of five to six person lift nets with rope off of stone ballast, while the net is raised, the tip end of the first lift nets thus formed such that the net containing the fish bowl, how cheerful the fishermen after getting caught a lot, they pat each other to show excitement. fish fish was eventually auctioned off to the merchants, housewives or the tourists. Chinese people, Arabs, and Portuguese people come and go but China continues to go up and down the nets along the waters of kochi, unchanged for more than six hundred years.

a dangerous profession

I'll give you an example of the most dangerous professions, according to figures compiled usa bureau of labor statistics, lumberjacks are at the top with nearly 129 deaths in 100,000 workers, followed by the fishermen and sailors with 123 fatalities and 94 each in 100,000 workers. the next dangerous profession is an airplane pilot, a metal factory workers, miners, builders, taxi drivers, truckers and farmers. However, overall, the average death toll in a dangerous profession 4.7 in 100,000 workers has fallen by about 10 percent in the last five years

trash for food

This article is actually already discussed in our schools .... now

I would try again to remind it.garbage is very important as a source of food for some birds and mammals, in some places, garbage is making some species survive.from certain sources that nearly 70 species of birds and 50 species of mammals eat the garbage. complete food chains have appeared in a landfill, insects grow rapidly in the warmth of the rotting garbage, birds and small mammals eat insects and they themselves hunted by birds of prey and other animals. very interesting, some of which are basically shy bird is not disturbed by the sound of a garbage grinder is very noisy and the arrival of other animals including humans with a common goal of survival