Electrostatics-Introduction

*This article will give you a brief insight about the notion of charge and its effect on surrounding charges.*

Electrostatics is all about the interaction of charges with its neighboring charges which includes calculating the forces experienced or the energy of a system.This brings us to a basic question as to what is a charge?..Can we see it?..feel it?..

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Sustainable Development

“Do you want multiplexes and freeways or fresh, clean air?” We find ourselves facing this question in almost every decision we make. Every country needs to exploit the given resources to satisfy the needs of its citizens. These resources, however, are limited and needs to be conserved for future generations. There is the need to strike a balance between these two aspects as we cannot choose extremes. For one thing, man cannot stop all developmental activities and go back to the old and simplistic lifestyle eating wild berries and living in caves. On the other hand, if we keep exploiting the environment, not only will the stocks of natural resources (most of which are non-renewable) get depleted but it will also lead to environmental imbalances and natural calamities. 

It is here that the concept of sustainable development comes of relevance.

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Sound

Sound is a common part of everyday life .Few sounds give us a pleasant experience such as good music or singing of birds etc and sometimes we feel sound is annoying or unpleasant.

Sound is defined as any pressure variation that an ear can detect ranging from the weakest sounds to the sound levels which can damage hearing.

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