Unique Fact: Sure Sciences
I used to hate with the name of physics and chemistry lessons. Maybe that makes me so hated by the second lesson is that often the teacher in explaining these subjects is more focused on the theory and formulas that meticulous. However, if the physics and chemistry are taught in different ways, in fact the two subjects were not as sordid as we thought. In fact there are many unique and interesting things from the concepts of physics and chemistry that can be delivered.
Well, this time I try to explain some unique facts about the concepts of science certainly, and I'll prove that the actual physics and chemistry it is actually very fun and interesting to learn.
- Believe not that the spider is believed to be stronger than steel? That being the case, even the U.S. military had planned to make bulletproof jackets are made of spun spider webs.
- Did you know that the density of ice is lighter 89% of the density of cold water? As a result 11% of the iceberg above the water surface and the rest submerged beneath the water surface. This fact makes icebergs that float in the sea is very dangerous, especially for ships that are sailing. This has proved the historic accident that occurred on the passenger ship Titanic in 1912. Ship that "could not sink" sank in the North Atlantic after hitting an iceberg.
- Historically, the fireworks began with the discovery of fireworks in the 9th century in China. The story, then a cook accidentally mixed three ingredients of black powder (black powder) that is in her kitchen, which is salt peter or KNO3 (potassium nitrate), sulfur(sulfur) and charcoal from wood (charcoal). It was a mixture of three materials is a combustible powder. If the powder was put into a piece of bamboo wicks and wick burned, then it will explode gunpowder and grunting loud explosion. In the Song Dynasty (960-1279 AD), Chinese people founded the fireworks factory. The raw material tube replaced with a roll of paper which is then wrapped in red paper on the outside. Then the fireworks is the basis of the manufacture of fireworks, which is focused on the colors and forms of borax fire in the air. Did buddies, during the Renaissance , in Italy and Germany there are special schools that teach the problem of making fireworks. In Italy the school emphasizes the complexity of the fireworks, while in the German school emphasizes the advancement of science. And finally the term pyrotechnics that describes the art of making fireworks. To make the fireworks needed an expert who understands the physics and chemical reactions.After many years, experts fireworks could eventually make colorful fireworks, such as red from strontium and lithium, the yellow color derived from sodium, green color comes from the barium and the blue color of copper. The chemical mixture is formed into small cubes called a star. Star is what determines the color and shape when the fireworks went off later.
- You know, the world's largest tanker Jahre Viking is the width of 69 meters and 458 meters long, 77 meters longer than the Empire State Building New York. Capable of carrying crude oil about 14 million barrels that could support all motorized vehicles on this earth for 2 weeks!
- Why cactus can survive with minimal water environmental conditions? The word 'cactus' comes from the Greek "kaktos" which means thorny plants. Actually, cactus have leaves.However, the leaves turn into a thorn shape, so as to reduce the evaporation of water through the leaves. Keep in mind, the width of the surface of the leaf of a plant, the more the amount of water evaporated each time. Analogues like this: If we again pungency, trus want to drink. Uh, drinking water was still very hot. Take the bowl / dish, then pour the hot water. Wait for several minutes, the water temperature was immediately decreased, because the cooling rate became faster due to larger cooling area. More outside air into contact with water in a dish rather than the water in the glass due to the larger field of press. Well, cacti also use such principles in adjusting to the environment.Then, the cactus stem is also coated wax network that can reduce evaporation. These networks are capable of storing water and resistant to drought though. Even so, cactus still need water to survive. Hence, in the deserts, cactus has very long roots yards into the center of the earth to find the source of water.Sources: http://myscienceblogs.com/ and from various sources____BELI____BUKU_______INI_____
