Continuous process of opening and closing of eyelids is called blinking. A person approximately blinks after every four or five seconds. The first and foremost function of blinking is to spread the lubricant through eyelids and eyelashes. The lubricant is produced within the eyes itself […]
How sunglasses work?
While buying sunglasses all of us think that it protects our eyes from high intensity light. So how they work in the protection of our eyes? Tinting of glasses determines the amount of light we are exposed to. The black and grey tinted lenses provide […]
Who invented disposable razor blade?
The disposable razor blade is believed to have been invented by King Camp Gillette in 1901. Right from the age of 16, he wanted to invent something that could make him rich. So he began working as a travelling salesman and tried his hand at […]
Why do we celebrate Columbus day?
Columbus day is celebrated in U.S in Puerto Rico, in some parts of Canada and in the cities of Spain and Italy for discovering America in October 12,1492. The day was first celebrated in year 1792. It was also known as “Discovery day”. Parades and […]
How does cancer attack the body?
Cancer is a type of disease in which mutated cells i.e. cancer cells in our body starts increasing very quickly which can harm the healthy cells and can be dangerous to our lives when it becomes uncontrollable. It may be surprising for you to know […]
Who invented Golf?
Golf is an ancient ball game that makes use of different types of clubs in order to hit the balls into each hole at a golf course. Though the origins of this game is highly debatable with references being traced back to Roman empire and […]
Who invented Ferris Wheel?
Who invented Ferris wheel? The Ferris wheel was invented by George Washington Gale Ferris in 1893. Originally a bridge builder he designed and constructed the first Ferris wheel as a landmark for the World’s Columbian Exposition in Chicago. A Ferris wheel which is also called […]
Why is sky blue?
When light moves through the atmosphere it passes from gas molecules in the air. Longer wavelength of light passes straight through atmosphere for e.g.: – green, violet, yellow, etc and light of shorter wavelength is absorbed by these molecules for e.g.:- blue light. By the […]
How many muscles are in the human body?
Muscles form the muscular system which is the network of fibers and tissues and causes the movements of body. There is not an exact number for the muscles. It depends on the expert’s opinion, some are complex muscles in which a branch of muscle is […]
Why is the Statue of Liberty green?
Exterior coating of Statue of Liberty is made up of copper metal which protects the statue. Copper can easily react with other elements. The Statue of Liberty is green in color because a process called oxidation has happened. In this process copper reacts with oxygen […]