Electrical Fire Extinguisher
The scientists know very well that electricity can extinguish fire, but they don’t the science behind it. Now George Whitesides and his helping hands are working on this theory that the soot particles of the flame can be charged which destabilize the flames and extinguish the fire. If beams of electricity are fired at flames, the flames quickly go out, as if water had been sprayed over them. A 600 watt amplifier connected to a wand is used to deliver the electrical beams. On the basis of the work carried out, backpacks are being developed for firemen who could be shooting electricity beams at the fires. In the same way, buildings can be fitted with electricity amplifiers on roofs, instead of water spraying, to extinguish fires. Such a system could save huge amounts of water wasted in extinguishing fires and avoid damage to buildings and contents.
Poor bio fuel is a strong energy
The fuels which could be achieved from wasted products. They may be in solid bio mass, liquid or gases. The material which could be taken through photosynthetic processes, they can be referred to solar energy source. In March 2011, aviation made a history, when an F-22 Raptor fighter jet aircraft flew using the bio fuel taken from mustard called ‘camelina’ mixed with a ratio of 1:1 with conventional jet fuel. The fighter aircraft said to be successful when it flew at the speed of 50 per cent grater than the speed of sound. The same experiment has been done from KLM and Japan airlines; they also used bio fuel of camelina in their aircrafts and it successfully. Camelina is widely grown in USA, usually as a formal crop. Bio fuel is cheaper than the conventional fuel, because the camelina is about $ 70/ barrel, whereas the conventional fuels are selling in market above $100/ barrel. How interesting!
Artificial leaves for energy
A lot of scientists have been trying to develop ‘artificial leaves’ for so many years. This will be a device that could use sunlight to split water into two elements, hydrogen and oxygen. The produced hydrogen can be stored in fuel cells and will be used for the production of energy. What will be role of artificial leaves? The natural leaves with algae and bacteria are able to carry out photosynthesis. By this process the carbon dioxide present in the atmosphere, with the help of sunlight energy produce compounds like sugars. Oxygen is released as a by-product of the reaction, this maintains the level of oxygen in the atmosphere and removes carbon dioxide from it and reduce the global warming, and provides food which is necessary for our survival. The yearly rate of energy taken by the process of photosynthesis is about 100 terawatts, which is about six times the yearly power consumption on our planet. In US the professor of Chemistry with his co-workers, now have developed a material which is thinner than a leaf and contains a couple of cheap catalysts that serves the purpose. If this leaf is placed on a gallon of water under sunlight and connected to a fuel cell; it can supply so much electricity which may be enough for a small household, for a day. The Scientists say that these types of leaves can produce 10 times more energy than a natural leaf.
Incredible artificial arm
The technology is advancing day by day and incredible inventions are coming into being. It is possible now for a disabled person to move his wheel chair or drive cars controlled by his own thoughts and his own brain. Two biomedical engineering students, of University in Toronto have developed an artificial arm that can be controlled by thought. This artificial arm will be powered by compressed air; this is easy to form and avoids the need of surgery that is necessary to fit artificial arm. The disabled person which will use this arm may send signals to it through a skull cap. This cap has sensors which ‘feels’ The change in blood flow in the brain, it Happen when the thought command is released. These signals are sent to a microprocessor in the arm which already has stored shapes for signals such as forward, backward, up and down. The microprocessor matches these signals coming from the brain with those already stored shapes in it for different movements and moves according to it.
Amazing plastic
How wonderful it is that, when you are driving and sitting on a car seat made of bananas, pineapples and coconuts? Why not as after all this is the amazing world of fantastic inventions. Most plastics are normally made from chemical reactions of particular chemicals. These chemicals derived from petroleum or natural gas. A group of researchers at the University of Brazil have now found that a new kind of plastic can be manufactured from materials such as pineapple stems, banana plants and coconut fibers. That is incredible!
This excellent type of material is prepared from these sources a pound of which can be used to prepare a hundred pounds of magical plastic. The resulting material is expected to be used in manufacture of plastics used in the automobile industry.
Strokes detector
We use sound waves through water technique, by submarines to detect the depth of the sea and to avoid other objects. Active sonar emits pulses of sounds and listens to the echoes that come back after striking to objects. Now sonar has been produced to detect strokes in human brains. There are sensitive sensors attached to the sonar which detects the pressure of waves generated by the blood vessels. This device is worn on the head. Irregularities in the blood flow caused by clots in blood vessels can be detected by conclusion of the resulting patterns. Strokes show a major cause of death all over the world and early detection of the problem is difficult. The sonar device will be a best tool for the physician to detect the nature of the stroke and the medication which necessary to overcome the problem.
