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Why don't Birds on a wire get a shock?
Now how is that possible? The fact is, for a living creature to get a ‘shock’ there has to be a substantial flow of current through the body. However, there is barely any current running through the bird’s body for two reasons. Firstly, the bird not only forms a circuit with the wire, but it also offers a high resistance to current, so the current passes through the wire instead of the bird. It’s a bit like this, would you prefer going on a smooth road or a road full of potholes?...
Why doesn't our stomach get digested?
All the food we eat goes into our stomach. Here, it is broken into smaller and simpler substances and get absorbed into the blood. Then, the blood carries these food particles to the different cells of the body, where they are used to provide energy to our body. Why doesn’t our stomach get digested? How is food broken into smaller particles? When we eat, the glands lining the walls of the stomach secrete a thin, strongly acidic, almost colorless liquid, called gastric juice....
How does the Lotus Flower Clean itself?
How will you explain the meaning of purity to someone? Well, many people do it by giving the example of the lotus — it grows in muddy waters but the flower remains spotless. It is not surprising that the lotus has a special or sacred place in world religions like Hinduism and Buddhism. It is a symbol of purity, and many a time gods are shown seated on lotus thrones. Now a group of German Scientists has discovered that the lotus plant is truly spotless....
What is Cloud Seeding?
There was a time when a farmer would sit out in his field, watching a lonesome cloud float away, taking with it the last hope of a much-needed burst of rain. As humans take control over more and more natural processes – not necessarily for the betterment of civilisation – rain too seems to have finally been leashed in. Just like a farmer throws seeds on ploughed land to harvest plants, clouds can also be seeded with chemicals to induce rain!...
Everything is made of something
How do you make tea? Simple, put a teaspoon of tea into a boiling cup of water. Strain the water, pour some milk and sugar to taste and the tea is ready! Interestingly, everything that we prepare has a recipe and is made up of simpler ingredients. For example, what is sugar made of? It is made of sugar molecules, which in turn, are made up of atoms. The atom is the building block of all substances....
What are Dry Clouds?
It is that time of the year when all of us look to the sky, waiting for the first drops of rain to fall on our faces. We wish the monsoon would come soon. But for people who live in polluted cities like Delhi or Tokyo, there’s some bad news. Israeli scientists have discovered that air pollution may actually stop rain from falling. To know how pollution may prevent rain from falling, it is necessary to know how and when rain falls....
The Dark Kingdom of Uranus
Named after the father of the Titans in Greek mythology, Uranus is the seventh planet in the solar system. It was first observed through a telescope by Sir William Herschel on March 13, 1781. Although Herschel wished to call the newly discovered planet Georgium Sidus (Georgian Star) for King George III of England, Johann Bode’s proposal of the name Uranus gained more acceptance over the years and finally became universal in the mid-19th century. The Uranian realm is a dark kingdom, so remote from the sun that daylight there approximates a total solar eclipse on Earth....
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