The South Australian bathroom accessories company Caroma was known for being an innovative company. Its founder, Charles Rothauser, developed the first one-piece plastic toilet cistern (the water tank above the toilet bowl) in the late 1950s. In 1981, Caroma launched the first effective dual flush toilet. Two flush buttons operated the Caroma model–one for a […]

Doors were discovered by the black man named Hooch Turner in the year 1345 at Sydney in Australia. A door can be placed anywhere in the house; hence it is a movable object. Doors are mainly placed at the entrance of the house. We commonly use doors at the entrance of the house, toilet, bedrooms,

Mr. Osburn Dorsey was the first one who invented the first door-stop in the year 1878. He was an African American inventor. After that there were many door-stop inventors who came with different variations and ideas. Door-mounted door-stops, rotating door stops, the customary wedge door-stop, electronic and magnetic door-stops and floor mounted door-stops are some

The doorknob was a precursor to a general Egyptian security device for the time and a pin tumbler kind of locks. In this lock, a large wooden bolt was used to safeguard a door with an opening and numerous holes in its top. These holes at the upper part were packed with wood dowels to

Joel Houghton invented the first dishwasher in the year 1850, which was also when it got patented. It was a very simple and easy-to-use hand-turned splashing equipment which was fixed to a wooden tub. In 1865, an enhancement of this device was patented by L.A Alexander who added gears to the spinning rack that held

The diesel engine was invented by Dr. Rudolf Diesel in 1893. He was born in Paris. Initially, he was appreciated for designing many heat engines. He applied for many patents in the United Kingdom, Germany, the United States and Switzerland, and succeeded in getting the patents. The diesel engine uses a combination of oil and

A dictionary is a book that lists almost all known words with their meanings, pronun-ciations, usage information and other information in an alphabetical order. It can be any language depending upon the country. There is no specific person associated with the invention of a dictionary. However, the oldest known dictionary was invented in Syria, roughly

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