4 items in this section. Displaying page 1 of 1
How does a Nuclear Bomb differ from a Conventional Bomb?
Every now and then we hear of countries of the world carrying out heated discussions about nuclear bombs. The topics range from who has the right to own a nuclear bomb and who does not, who should use it and who must not and so on. But what exactly happens when such a bomb actually explodes? And how are nuclear bombs different from conventional bombs? The greatest difference between the two types of bombs is the sheer scale of destruction they cause....
A Beautiful Ship in the Sky
In the boundless ocean of space, a beautiful ship sails serenely around the sun. Our earth – Lovelier than the moon, this fragile ship travels one hundred and sixty thousand kilometres every hour. Space is full of countless such ships. But our Earth is special. It is the only ship which carries life – the only ship with voyagers on board. Four hundred thousand different kinds of life make their home on Earth. Together, they make it beautiful and precious....
What does a Train Whistle tell us about the Universe?
I remember my first visit to the railway station as a child of five. The excitement of the approaching train was an experience I have never quite forgotten. At first I heard a train whistle far away, low and distant. As the train got closer, the sound of the whistle not only increased, it became shriller, and difficult to bear. So much so that I covered my ears in alarm! Once the excitement had passed, I discovered a secret – even with my eyes closed and by just hearing the whistle, I could tell whether a train was approaching or moving away....
Rocky Planet of Fire and Ice
Would you believe it? The soft sand that we sink into on the beach is actually rock? Sand is what a rock becomes after years of being worn down by rivers. Years of sea waves crashing against huge rocks and cliffs makes rocks break into small particles. And ultimately, they end up as sand. The colours of sands — yellow, red, grey, black — depend on the kind of rock it comes from. Sometimes desert sand is carried by winds across great distances, to seasides, increasing the amount of sand in the sea....
- ❮ Previous
- Next ❯