James Watt was born on January 30, 1736 in Greenock, Scotland, UK. His mother gave him lessons in reading, and taught him how to draw with a pencil and chalk. His father drilled him in arithmetic and encouraged him to use tools. When James began to go to school, he did not do well due […]
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Thomas Alva Edison was a great inventor. He was born in Milan, Ohio, on February 11, 1847. He was the youngest of seven children. His middle name was Alva. His family called him ‘Al’. Edison’s family moved to Port Huron, Michigan, when he was a child. He spent most of his childhood there. Young Edison
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Isaac Newton was born on 4th January, 1643 in the county of Lincolnshire, England. His father’s name was also Isaac Newton! His father had died three months before he was born. Newton was tiny and very weak at birth. His mother said that he could fit into a quart size mug, which is about the
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Born in Pisa, Italy on 15th February, 1564, Galileo grew up with his six brothers and sisters during the Italian Renaissance. His father, Vincenzo Galilei, was a musician, and hence Galileo too was fond of music, sounds and rhythms. Galileo began his education at 10, when he moved to Florence along with his family. He
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Sclera (white portion of the eye) is the outer sheath of the eyeball. Sclera protects the eye from damage as it is the toughest pigmented fibrous coat of the eye. Sclera consists of an inner circular muscle and an outer radial muscle. Sclera controls the amount of light entering the eye. The cornea is the
The eye is a delicate organ; it is the sense organ for vision. Eyes are connected with the optic nerves. The eye sockets of the skull in which the eyes are present are lined by soft tissues. Eyelids, eyelashes, eyebrows and tears protect the eye from dust and dirt. The special cells known as photo
Sense organs connect a human body to the external environment by the means of five senses: vision, smell, taste, hearing and touch. These sense organs work in coordination with the nervous system. Hence, the central nervous system is responsible for sensing the external environments and responding accordingly. Each sense organ has specific receptors in the
