Physics

Primary Colors, Secondary colors and Complimentary Colors

May 21, 2013

When a beam of white light is passed through a prism, white light splits up into different colours. Consequently a coloured...

Human Eye & Eye Defects

May 21, 2013

Our eyeball is nearly spherical with white outer layer called the sclera. Here is a short description of how our eye...

Near Point increasing with age

May 21, 2013

The points between which the eye can see distinctly are called far point and near point. The far point is normally...

Twinkling of Stars and Mirage

May 21, 2013

Heat energy radiated by the earth changes the density of the atmospheric layers continuously. This changing density of the air layers...

Lens Formula & Power of the Lens

May 21, 2013

The relationship between the object distance (u), the image distance (v) and the focal length (f) of the lens is called...

Real Images and Virtual Images

May 21, 2013

The image formed by the actual intersection of refracted rays through a lens is called the real image. The real images...

Lenses

May 21, 2013

A lens is a thin piece of a transparent material bounded by two spherical surfaces or by one spherical and other...

Total Internal Reflection

May 21, 2013

When a ray of light passes from an optically denser medium into a rarer medium; the refracted ray is bent away...

Refraction of light

May 21, 2013

When we place a pencil in a beaker containing water, we observe that the pencil appears to be bent at the...

Humidity and Relative Humidity

May 21, 2013

Humidity is the amount of water vapour present in atmosphere. The amount of water vapour in atmosphere changes with time and...

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