10 Oct 2014
Light year made simple
How far are we from the sun? How far are the planets away from each other? The distance between the sun and earth is about 149,600,000 Km. The distances involved are so very huge that astronomers do not measure them in miles or kilometers. If it is done so, then they have to keep a
10 Oct 2014
Songbirds: Know more about them
There are many different kinds of songbirds. Of them, nightingales are the most sensational singers. Not all species of songbirds sing well. The songs of the nightingale have been described as one of the most beautiful sounds of nature. These sounds have been the very reason behind the famous poetries and fairy tales. One good
09 Oct 2014
DEET and insect repellant creams
If you live in an area with numerous biting insects like mosquitoes, flies, ticks etc, you must have heard the use of mosquito-repellant creams. DEET is one of the active ingredients found in most of the insect repellant creams. The chemical formula for DEET is N, N-diethyl-3-methyl-benzamide. There are other chemicals like N,N diethyl benzamide
08 Oct 2014
Plants: Annuals, biennials and perennials
Annuals, biennials and perennials are plants that are classified according to their life expectancy. The life expectancies differ from species to species. An oak or teak tree may live for years together while a sun flower may not. When many a plant goes through its entire life cycle within a year, such plants are called
07 Oct 2014
Law of conservation of energy: Be more clear
Energy is the capacity to do work. Any system be it an electrical system, a mechanical system or our own body, needs energy to do work. This could be of any nature like electrical, mechanical, thermal etc. The main fact is it cannot be created out of nothing and also it cannot be destroyed. All