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...
What Do You Know About Penicillin? Penicillin created much excitement and became known very quickly. Hardly any weapon against disease made such an impact. It was as if suddenly the world became aware of a “miracle”, happening before its eyes. Penicillin is not one of...
How The Earthquakes Are Recorded On A Seismograph? Sometimes there is big news hitting the headlines of national dailies about an earthquake that happened is some part of the world, possibly in South America or Japan. The news is about cities being destroyed, hundreds of...
What Do You Know About Magnet? There is an old legend, that a shepherd by name Magnes, tending his flocks along the slopes of Mount Ida, discovered that his iron Crook and the iron nails of his sandals were clinging to a dark black stone....
Why The Bite of a Mosquito Itches? We have heard the expression “The female of the species is deadlier than the male”. It actually applies to the mosquitoes. It is the female mosquito that only sucks blood. The bill of the female has some sharp...
Why Is It, That Moths Eat Wool? A variety of moth is called “The clothes moth”. Most people blame it for making the moth holes in our clothes and rugs. But the moth was not doing any damage at all. The moth never eats. It...
In Which Way The Earthworms Eat? The earthworms have been rated the most important animals in the world. Of course important from the point of view of human beings. The activity of earthworms prepares the soil in vegetation on which the life depends. Earthworms turn...
What Is The Food Of Ants? Ants are everywhere in the world. If do not find them somewhere as an exception to above, is the very summits of highest snow clad mountains. We can very well imagine now that there are thousands of different kinds...
Why, In Their Own Webs, Spiders Are Not Caught? “Please came into my parlor, the spider said to fly. The tricky spider is clever enough. The spider knows fully well that the fly is anticipated to be caught and will prove a good meal for...
How Silk Is Made By Silkworms? China learnt the secret of making silk. it was thousands of years ago Silk is made from the fine web spun by a certain caterpillar in making its cocoon. This secret was jealously guarded. Any one taking silkworms or...
