Tag: Science GK

The earth makes its own air in the sense that the composition of the atmosphere is always being changed by the things that happen at the surface of the solid earth or at the surface of the seas. Gases are passing into the atmosphere from...

All gases, when exposed to other gases, tend to get mixed with them, until, if nothing interferes the various gases are equally distributed or diffused. The breath we breathe out has much more carbon dioxide and also much more water vapour than ordinary air. They...

Our Breath is warmer than the air outside. Sometimes the air outside is so warm that it does nothing in particular to that gaseous water or water in the form of a gas, which is al- ways in our breath; and so, we see nothing....

The water on one’s body is absorbed in the tiny spaces between the fibres of the towel in the same way as ink is taken up by the blotting paper.

A very hard, very smoothly glazed paper will scarcely absorb any ink. But a paper of loose texture, with a rough, unfinished surface like blotting- paper, absorbs ink just as a sponge sucks up water; and the water of the ink, instead of mainly remaining...

Through this hole enters the air which we blow out of the nozzle. When we part the handles, thereby opening the bellows, the air rushes in through the hole and when we bring the handles together, and so close the sides of the bellows, the...

The water on one’s body is absorbed in the tiny spaces between the fibres of the towel in the same way as ink is taken up by the blotting paper.

The Apteryx, or, as the natives call it, the Kiwi, is a peculiar bird with hardly any trace of wings. Found in New Zealand, where it was formerly very common, though now it is seen more rarely, it has a very long beak with nostrils...

A particular kind of bird always produces the same kind of colour in its eggs, first as it produces a particular kind of colour in its feathers. This is a result of the particular chemistry of the body of the bird. The difference in colour...

Through this hole enters the air which we blow out of the nozzle. When we part the handles, thereby opening the bellows, the air rushes in through the hole and when we bring the handles together, and so close the sides of the bellows, the...