reference point

Bonding in Covalent Solids - In covalent solids, the constituent particles are atoms of same or different kinds. Covalent bonds network, forming a continuous giant interlocking structure of atoms throughout the crystal that hold them together. They are also referred to as covalent network..

. It is a physical, emotional and intellectual drain for them. They are paid for their labour, but it is the parents who take it. How then is it different from cases of child labour that we usually refer to? The only difference could be that this is indulged in by parents who are better o..

. Dispersion is of negligible importance for ordinary sound waves. Like light waves (in air), the velocity of sound waves is independent of the frequency. Sound can also undergo total internal reflection. When sound waves meet at a common point, the resultant effect may be more or less lo..

The centre of mass is an imaginary point where one can assume the entire mass of the given system or object to be positioned. Consider a system consisting of two point masses m1 and m2, whose position vectors at a time t with reference to the origin O of the inert..

. The plotted points must be joined with a single straight line or a continuous curve. The graph should cover as much of the area of the graph paper as possible. This requires a sensible choice of scale for each axis. It is unlikely that points plotted from real experimental res..

Refraction of Light through a Glass Slab - Let us now perform an experiment and find out how light gets refracted when it is incident on a rectangular glass slab. Place a rectangular glass slab on a white sheet of paper fixed on a drawing board. Trace the boundary ABCD of the glass slab. Remove the..

In spite of many evidences, studies and theories, we are still not aware of how the evolution actually occurs. If we go backwards at some point in the history of the earth it would have consisted of only the basic elements, the non-living materials like the air, water, sunlight etc. It i..

All moving objects in our daily life have well defined paths or trajectories. The path or trajectory of an object can be determined by knowing its position and velocity at various intervals of time. However, Werner Heisenberg, in 1927, pointed out that we can never measure accurately both..

Uncertainty Principle - All moving objects in our daily life have well defined paths or trajectories. The path or trajectory of an object can be determined by knowing its position and velocity at various intervals of time. However, Werner Heisenberg, in 1927, pointed out that we can never..

Let us now perform an experiment and find out how light gets refracted when it is incident on a rectangular glass slab. Place a rectangular glass slab on a white sheet of paper fixed on a drawing board. Trace the boundary ABCD of the glass slab. Remove the glass slab. Draw an incident ray IO o..