अपना हाथ जगनाथ बुलाकी एक बहुत मेहनती किसान था। कड़कती धूप में उसने और उसके परिवार के अन्य सदस्यों ने रात दिन खेतों में काम किया और परिणाम स्वरूप बहुत अच्छी फ़सल हुई। अपने हरे भरे खेतों को देख कर उसकी छाती खुशी से फूल...
What Makes A Corn Pop? The children feel most amazed at the ability of even to ‘Pop’. It is a simple affair. Popcorn kernels are small and very hard. On heating, the moisture within the hard shells ‘turns to steam and thus explodes. This is...
How Do We Make Chewing Gum? Chewing gum is made from a gum base, corn syrup, sugar and flavouring. The gum base keeps it chewy in hours. For making bubble gum, still, a more rubbery gum base is called for so that it will stretch...
How A Submarine Manage To Stay Under Water? The fundamental principle that enables a submarine to submerge or to surface is a simple one. Most modern submarines have two hulls or we call them bodies. Water ballast is stowed between the inner and outer hulls....
How The Engine of Jet Works? We know jet engine’s power is the newest and this powers the most powerful and latest aircraft we have today. The principle behind this was discovered about 2,000 years ago! The principle is jet propulsion and was first shown...
How An Automobile Runs With Gasoline? In present day the cars are built so efficiently that we can drive all their life without really knowing what makes them run. We reach for a gasoline station, fill up the tank, and move away. If something goes...
What Do You Know About Gasoline? Gasoline is considered a perfect fuel. It is a liquid. It is light. It changes easily into vapour. It is easily ignited. Gasoline is a mixture of hydrocarbons, which means it is a compound make up of carbon and...
How The Fluorescent I Lights Work? Things glow when they are hot. His true in a majority of the cases. In bulbs, there is a filament that must be heated to high temperature such that it gives off light. There are materials which can glow...
How An Electric Bulb Is Illuminated? An Englishman Humphry Davy in the year 1800, was conducting certain experiments with electricity. He had electric battery which was quite weak. He connected the two wires to the ends of battery and attached a piece of carbon to...
How Electricity Is Produced By A Battery? Electric current for power can be produced in two ways. It can be produced by machines called “dynamos”, or “generators” and by battery cells. A battery cell produces electricity by changing chemical energy into electrical energy. Part of...
