Thursday, 7 September 2017
Tuesday, 28 July 2015
Saturday, 11 January 2014
- Positive education
Swami Vivekananda stressed on giving the public only positive education, because negative thoughts weaken men. Swami Vivekananda told, if young boys and girls are encouraged and are not unnecessarily criticized all the time, they are bound to improve in time.
- National integration
According to Swami Vivekananda it is will, it is the integration that is the power.
Bridge between the East and the West: Another great contribution of Swami Vivekananda was to build a bridge between Indian culture and Western culture. He did it by interpreting Hindu scriptures and philosophy and the Hindu way of life and institutions to the Western people in an idiom which they could understand. He made the Western people realize that they had to learn much from Indian spirituality for their own well-being. He showed that, in spite of her poverty and backwardness, India had a great contribution to make to world culture. In this way he was instrumental in ending India’s cultural isolation from the rest of the world. He was India’s first great cultural ambassador to the West.
Saturday, 2 March 2013
STRUCTURE OF HUMAN EYE
Eye lens --- double convex lens
The retina --- contains numerous light sensitive cells which generate electrical signals which are sent to brain via optic nerve
Cornea---The transparent spherical membrane covering the front of the eye.
Iris--The coloured diaphragm between the cornea and lens.
Pupil ---The small hole in the iris.
Eye lens--- It is a transparent lens made of jelly like material.
Ciliary muscles--These muscles hold the lens in position.
Retina--The back surface of the eye.
Blind spot--The point at which the optic nerve leaves the eye. An image formed at this point is not sent to the brain.
Aqueous humour---A clear liquid region between the cornea and the lens.
Vitreous humour--The space between eye lens and retina is is filled with another liquid called Vitreous humour.
Persistence of vision--The image of an object seen persists on the retina for 1/16 second even after the removal of the object. This continuance of sensation of eye for some timed is called persistence of vision.
Colour blindness-- It is said to occur when a person cannot distinguish between colours
Accomodation--The ability of the eye to focus both near and distant objects, by adjusting the focal length, is called the accommodation of the eye.
Far Point of the Eye-- It is the farthest point at which the object can be seen clearly. For a normal eye, the far point lies at infinity.
Near point of the Eye-- It is the closest point at which an object can be seen clearly. For normal eye, the near point lies at 25 cm from the eye(least distance of distinct vision).