Everyday once or twice, the driver goes to the CNG stations to fill up the cylinder of my private car. Surprisingly, it is observed he avoids some CNG filling stations though the stations are nearer to my residence. When he was asked the reasons of avoiding those stations, he replied the gases in those stations are not good. His statements raised my curiosity about the CNG stations and asked the other drivers serving the same building. They replied almost in the same language. After lots of questions and answers, it came out that those filling stations provide gas along with air. As a result, the vehicle runs less distance with the gas filled from those stations in comparison to the good ones, though the amount charged are same. The transport drivers in our country are not scientifically literate and they are not supposed to know scientific formulas or rules and regulations. But there are many owners of private cars and other transport vehicles in the city who are scientifically literate, qualified and experienced. They might have heard this type of complains from their drivers too. Without sufficient proof, no body should be blamed and that is also not my purpose of writing this article. As an academic scientist and science connect ambassador (United Nations University), I should not remain far from scientific complexities or scientific ignorance that causes disasters or accidents every day.
It is my assumption that at least five million people who have passed higher secondary with physics or obtained diploma in science trades are aware of laws of gas particularly the Charles’s and Boyle’s laws. The scientifically literate persons must agree that those laws are applied to the CNG filling stations not only in Bangladesh but all over the world. According to Charles’s law, pressure remaining constant, the volume of a given mass of gas increases or decreases by the same factor as absolute temperature (i.e. gas expands as temperature increases) and the Boyle’s law states for a fixed amount of gas kept at a fixed temperature, pressure (P) and Volume (V) are inversely proportional (that means while one increases, the other decreases). From the description it is clear that there are lots of scopes to cheat the customers in a society where most people with scientific skills and knowledge remain silent in all respects. To overcome this type of problems, not only the government but scientifically conscious citizens should come up and take responsibilities. Gas is an important national mineral no doubt but a CNG station can create disaster in the region at any moment if handled carelessly and inefficiently. The whole system is based on science and technology. As such a scientific environment including strong protection arrangement must be maintained in the stations and its surrounding areas for the national and social safeties.Normally the drivers in our country are illiterate or poorly literate. They don’t understand the scientific laws but they are given the most dangerous responsibilities, even more than a justice who gives physical punishment to the culprits or hang them on specific ground. But the drivers kill the innocent people due mainly to personal and social ignorance. But they are not severely punished like the other killers of human beings.
It is observed that most of the accidents occur due to scientific ignorance of the drivers of the heavy vehicles like the loaded trucks or bus. When a man or a woman fall in front of a speedy truck, according to Newton’s laws of motion, the momentum MV (product of mass M and velocity V) of the moving vehicle become very large. In the circumstances, it becomes impossible for the driver to stop the heavy vehicle immediately on the spot. In most of such cases the driver fails to stop the vehicle in one or two meters distance. As a result, not only the man in front dies, but the passengers inside the vehicle die too. If the scientific reasons of such accidents are explained to the drivers, passengers and common people who cross the roads without care and fear, the percentage of accidents will come down to a significant number. The authority concerned may show interest on the issue.
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