It is an age of science. Discoveries and inventions are taking place. Science helps man to manufacture a pin and also a jet plane. Man's comforts have increased and his powers strengthened. Man is now the master on land, on sea and in air.
One such marvel is the aeroplane. It enables us to travel hundreds of miles in a few hours. It carries mails quicker than the train or the steamer. Doctors are using the plane to rush to distant places to save the lives of their patients. The aeroplane has been used to save the lives of patients. It has been used to fight the locust pest that destroys the crops in the fields.
Now-a-days it is also adopted for sowing seeds over large acres of land. It is also useful to explorers in helping them to travel to places where other methods of transport cannot be used. With the help of aeroplanes man has flown over the Everest, the world's highest peak, and has reached the Poles. In war, it is used as a weapon of destruction.
Talkie is another modem marvel; images projected on a screen act and converse like actors on the stage. The talkie is an improvement on the movie. It makes the cinema show more realistic, for we are not in the company of dumb shadows that flit across the screen. The talkie has almost driven out the drama. The talkie machine would be very useful in schools.
Screen projections could be shown to the pupils to illustrate the lessons in their text books and also teach them new ideas which do not find place in text-books.
The radio is yet another marvel. Sounds are transmitted over long distances without the help of wires by electro-magnetic waves. A listener in Madras can hear on his radio-set the speeches made in the United Nations or in other world assemblies. The radio has become very popular.
News, music and other forms of entertainment from far-off countries can be heard on the radio. The radio can replace the teacher in school to a certain extent. The children learn many things. Besides, mass education on a large scale can be carried on by means of the radio. Friendly and fruitful contacts with foreign countries can also be established.
Lastly, the radio has been improved to enable the audience to actually see the image of the person whom they hear. This is called the television. It helps persons who are far-away from their country not only to enjoy their national songs or concerts but also to see the artistes.
Thus, it makes one feel the separation from his motherland less. Manufacturing processes, technical demonstrations and even lectures with experiments are being shown on the T V. screen. T V. has become a powerful educative factor.
The list of modern inventions is very long, for it embraces the whole sphere of human knowledge. The people of every country should benefit by modern inventions. But they should at the same time see to it that it is not used for destruction.
In history, many people have come up with several inventions in the aim of making the lives of human beings better and comfortable. As life continues, different inventions are changing at the same rate as the changing world. World's famous inventors have explored and invented things such the earlier inventions such as electricity, the wheel, penicillin etc., to the modern inventions such as the GPRS technology, the social networking, the bar code and many more. However, the invention of electricity paved way for many inventions and for that reason it is considered an invention that changed the world (Samantha, 2008).
Invention of electricity does not have a specific inventor but instead has a chain of inventors. However, Benjamin franklin is credited for discovering electricity in the 18th century. Electricity has huge and growing uses as a form of energy; this is due to its flexibility and reliability. Electricity has several resources that are used to produce it namely, the fossil fuels, water, solar, wind, hydrogen and many others. Its distribution is via the transmission grid to the small scale users (Samantha, 2008). Electricity has several uses.
The first use of electricity was communication whereby the telegraphs, radios and the television had electric motors that were run using electric current. In today's world, electricity is used in almost 75% of the machines. In the rural households, this invention is used for lighting, TV, cooking and other minor consumptions such as computers and fans, in the urban areas; electricity is used in major industries to run machines and other household uses such as running electric products (Ian, 2007).
The invention of electricity and its continued development has made it the main source of power worldwide for homes, in businesses and in industries. In addition, invention of electricity has led to the invention of the products that are electric powered. With no electricity, very many activities will stop making life very difficult for many people.
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