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The Power and Energy ProblemEvery process in the form of a sequence of events, i.e. in biology, chemistry or physics, conforms to the "Principle of the Conservation of Energy". In short, one can summarise this as "it takes a certain amount of energy to get a certain work done".
A significant example of this conservation can be observed in flight of birds. Migrating birds have to store enough energy to take them through their trip. On the other hand, another necessity in flight is being as light as possible. No matter what the results, extra weight has to be done away with. In the meantime, the fuel has also to be as efficient as possible. In other words, while the weight of fuel has to be at a minimum, the energy output from it has to be at a maximum. All of these problems have been solved for birds. The first step is to determine the optimum speed for flight. If the bird is to fly very slowly, then a lot of energy has to be spent to remain aloft in the air. If the bird is to fly very fast, then fuel will be spent in overcoming air resistance. It is therefore obvious that an ideal speed has to be maintained in order to spend the least amount of fuel. Depending on the aerodynamic structure of the skeleton and wings, a different speed is ideal for each kind of bird. Let us examine this energy problem as it relates to the Pacific golden plover (Pluvialis dominica fulva): this bird migrates from Alaska to Hawaii to spend its winters there. There are no islands on its route. Therefore, it has no possibility for rest. The flight is 2500 miles (4000 km) from start to finish and this roughly means 250,000 wing beats without break. The trip takes more than 88 hours. The bird weighs 7 ounces (200g) at the start of the journey, 2,5 ounces (70g) of which is fat to be used as fuel. However, scientists, after calculating the amount of energy the bird needs for an hour of flight, determined that the bird needed 3 ounces (82g) of fuel for this flight. That is, there is a shortage of 0.4 ounce (12g) of fuel and the bird would have to run out of energy hundreds of miles before reaching Hawaii. In spite of these calculations, the golden rain birds unfailingly reach Hawaii every year. What could the secret of these creatures be?
The Creator of these birds, God, inspires them with a method to make their flight easy and efficient. The birds do not fly haphazardly but in a flock. They follow a certain order and form a "V" shape in the air. This V formation reduces the air resistance that they encounter. This flight formation is so efficient that they save about 23% of their energy. This is how they still have 0.2 ounces (6-7g) of fat when they land. The extra fat is not a miscalculation but a cushion to be used in case of encountering reverse air currents. This extraordinary situation brings the following questions to mind: How could the bird know how much fat is needed? How could the bird manage to acquire all this fat before flight? How could it calculate the distance and the amount of fuel it needs to burn? How could the bird know that conditions in Hawaii are better than Alaska? It is impossible for birds to reach this knowledge, to make these calculations, or to make group flights according to these calculations. This is an indication that the birds are "inspired" and directed by a superior power. This article is based on the works of www.Harunyahya.com |
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