Tuesday, March 18, 2014
Amazing Artistic Flying Techniques Displayed By Birds--1
With bodies heavy for flying and light for diving into the water, birds push the limits of their physique. Let us take a close look at the artistry displayed in the birds, which amaze thinking people with their wonderful flying techniques. Able to dive into the water at a speed approaching 90 km, kingfisher can grab its prey at this speed in a depth of 60 cm, instantly pivot back and then, using its wings as oars, surface above the water. In order not to lose its prey, the bird has precisely timed diving and surfacing takes place in three seconds. A torpedo as light as a fly. In a short period of time the kingfisher has travelled a distance 414 times its height. This shows that it can move as fast as a fighter aircraft. The fish kingfisher wants to catch is actually in a different position than it would visually appear from the sky due to he difference of degrees of deflection of light in water and air. Bereft of any knowledge of optics, how does this bird solve the problem of physics? How heavy is a bird feather? There are physical limits to bird's flying capabilities. In order for a bird to fly its weight should not be more than 15 kg. In order for birds heavier than this to fly, their wings have to be proportionately larger so it is difficult for this big a bird with heavy wings to fly. Male silent swans (Cygnus olor) weigh more than 14 kg; in fact there are some that weigh 20 kg. However, Allah Tabarak Wa Taala, compensated this situation with special structure. Like other birds, the silent swans have some bones filled with air and the inner part of these bones has been made stronger with props. For this reason the feathers and bones of these birds are one-tenth as heavy as their bodies. There are more than 12,000 muscle ligaments in the wings of swans to activate the feathers used in flying. long (50 cm) wing feathers greatly increase the carriage surface of the wings. Each wing can carry 200 g of weight during flying. For this reason a swan that loses just one wing feather can no longer take flight. It takes 60 days for the feather to be completely renewed. Another masterpiece of Great Creator, is owl, whose ears were created asymmetrically (the right ear is higher), sounds reach the close ear 1/300,000 of a second earlier. This small amount of time is enough for the owl to determine exact place of the source of sound. Are owls flying radar stations? Under normal conditions it is not possible to hear the sound waves of mouse eating hazelnut in a hayloft. Possessing a sensitive receiver owls are an exception. through the 95,000 nerve cells in the simultaneous hearing center, the brain imagines a a 3-D image of the prey. The facial structure of owl resembles the high tech early warning equipment on AWACS planes. Focusing on even the smallest sound wave, just like a satellite antenna, this structure can not explained by the intelligence of an owl. Due to the anatomy of its 14 neck vertebrae (humans and other mammals have seven vertebrae), the owl was given the capability of turning its head 270 degrees and determining the exact position of its prey. While flying towards the place where the sound came from, the owl can recalculate the place of prey, relative to its position, even if the prey changes its position.