Subhav Samarth

Let us begin with understanding currency first. In ancient times, thousands of years back, there was no currency (money like rupee or dollar, etc.) to trade or buy items that people wanted. At that time, the most common system of buy and sell was the barter system. People exchanged goods or services in exchange for goods or services. Suppose if I wanted rice and I had sugar in my house, I will find someone who will take my sugar and give me rice in exchange. This system of exchange of goods for some other goods is called the barter system. It was the standard mode of trade or buying or selling of items that people needed. But this was not very easy to practice. E.g., if you needed food immediately and you had some iron, you will have to find someone who will exchange food for iron. Sometimes it was difficult to find someone who would exchange your item for their items. The process was also very slow and even the quantity of exchange and the value of each item was not decided. E.g., ho...

Project Manhattan . The 2nd world war had started. In March 1939, Germany had already overcome Czechoslovakia. There were many uranium deposits in Czechoslovakia but Hitler banned the export of uranium from Czechoslovakia. Before that, the news of "fission experiment" had already come from Germany. For all these reasons, other countries believed that Germany was making the world's first nuclear bomb. There was only one way to deal with the German nuclear bomb. It was the concept of "comprehensive confirmation destruction", also called as Mutually Assured Destruction. It basically means that if you destroy me, I can also destroy you. So the allied forces had to make a similarly powerful bomb so that Germany can be threatened with Nuclear bombing if Germany bombs other countries. Szilard was an American physical chemist who started making atomic bombs for USA. In 1939, he and Einstein wrote a letter to former President Roosevelt to begin the uranium chain reaction...

Wrote for my University Journal in 2019, but could not be published due to technical reasons. 目で食べますが。。(The food looks delicious but..) 19 million tons, that is what Japan throws away perfectly eatable items every year. Japan's agricultural Ministry estimates that over 23 million tons of food was discarded in 2017; about 11 trillion yens, which is the monetary equivalent to Japan's annual agricultural corpus. Food accounts for nearly 32% of all household wastes in Tokyo and that is about 5000 tons per day, enough to keep 4.5 million people alive daily. Yes, it is true that other developed nations waste food, but in Japan, the problem is paradoxical. Japan's 40% food self sufficiency is the lowest of all G-7 countries, which means the bulk of Japan's food supply is imported. And yet, a third is wasted. According to magazine Kinyoubi , 90% of all government schools do not allow children back home food left over from school lunches. The situation stems from a 1995 food poi...