151 World’s Greatest Inventions

Now no one can complete his math studies without the proper understanding of deci-mals. It is actually a numeral system having ten as its base. Sometime it also refers to decimal fractions. When we talk about its invention, no one has the accurate answer with evidence. It is believed that decimals were present and used […]

CT scan is a computed tomography scan. It is a medical procedure by which x-rays processed by the computer are used to obtain the tomographic images of the various parts of the body. G.N. Hounsfield was the inventor of CT scan, a diagnostic X-ray system. The invention of CT scan is considered to be the

Crossword puzzles were discovered by Arthur Wyne in 1913. He was working for a newspaper called ‘The New York World’. His editor asked him to create a new game for the entertainment section. It was diamond-shaped and was referred to as word-cross. Later, it came to be known as cross-word and finally because of an

An evolution of the laserdisc technology, the Compact Disc, which is also popularly known as CD, is an optical disc that is used to store various types of digital data. Initially, CD was invented with the aim of storing and playing a sound recording. However, later on, it was adapted to store data. There are

Credit cards have facilitated people to make dealings or essential transactions without carrying a huge sum of cash everywhere. The idea of using a card made out of metal sheet was illustrated by Edward Bellamy in 1887 in his novel. Credit cards have been a part of business since the late 19th century. Originally, they

The cooler was invented on 24 March, 1951, by the scientist named Sir Richard C. Laramy of Joliet, Illinois. The cooler starts with the help of electricity, but the cooler of ancient time had high voltage in it. In New Zealand, the cooler is also known as cool box, chilly bin, etc. After some time,

Earlier people were bound to carry their spectacles everywhere if their eyesight was not so accurate but now people are using contact lenses not only for getting right vision without use of any spectacles but also for style. It is actually a lens—a medical device worn on eyes for the purpose of getting correct vision

It is not easy to tell who discovered cloth and when it was invented but most likely, cloth is about 1 lakh 7 thousand years old. Another theory of modern human specifies that cloth has been used 650 thousand years ago and other history books specify that the use of cloth has been about 42,000

The clothes dryer which is a real wonder and a very useful machine was invented in the year 1799. Pochon, a Frenchman invented the first dryer and name it ventilator. It was a forerunner of the contemporary plummet dryer. This dryer was made up of a revolving metal drum and had openings bored into it.

Chewing gum has been relished in various forms by people across continents since the Neolithic period. The bark tar of trees that had medicinal properties was chosen to make gum. Women normally used the gum as a mouth freshener. The ancient Greeks made their gum from the resin of the Mastic tree while the Mayans

Cereal flakes that we have nowadays for breakfast were created by the American 7th day Adventists who formed the Western Health Institute of Reform in the year 1860. They manufactured, promoted and marketed wholesome cereals. Will Keith Kellogg is the father of W.K. Kellogg Foundation which was established in the year 1906. In an attempt

Ceiling fans first made an appearance in the 1860s. These early models used hydro energy to turn belts that, in turn, circulated the blades of the fans and were popular in southern America where a few examples can still be seen. The first electric ceiling fan was created by Philip Diehl in 1882 using a

In Ancient China and Greece, a machine was used for calculation. The invention and development of the calculator came from the concept of that machine. The first commercial calculating machine was the Arithmometer. Invented in 1820, it was commercially circulated in the year 1851. Another machine that is considered as an important stepping stone in

Joseph Fry invented the candy bar in the year 1847. He mixed melted cocoa butter into a defatted cocoa powder and made a batter which was then put into a mould. The result was a bar of chocolate that became popular with people so much so that they enjoyed eating chocolate as good as drinking

Camera evolved from an ancient apparatus called camera obscura. This had a pinhole or lens to get an upside image of the object outside, but this image could not be captured; it was manually drawn. From there it moved on till a guy named Joseph Nicephore Niecpce; a Frenchman used his camera obscura to take