When was the Kaleidoscope invented?
The Scottish scientist, Sir David Brewster in the year 1816 invented the kaleidoscope and in 1817, he patented it. Kaleidoscope is a toy that consists of a tube comprising of… Read more »
The Scottish scientist, Sir David Brewster in the year 1816 invented the kaleidoscope and in 1817, he patented it. Kaleidoscope is a toy that consists of a tube comprising of… Read more »
In the year 1935, the first parking meter known as Black Maria was designed by Holger George Thuesen along with Gerald A. Hale. On 16th July 1935 it was first… Read more »
Bette Nesmith Graham invented the liquid paper in the year 1951. It is mainly used to correct mistakes during typewriting and handwriting. It is a trademark of Newell Rubbermaid Company… Read more »
Xerography is a technique of dry photocopying invented in 1938 by an American inventor Chester F. Carlson who called it electrophotography. It was renamed later as Xerography and then shortened… Read more »
Steve Chen, Jawed Karim and Chad Hurley created YouTube in February 2005. It is a website of video sharing in which users can view, share and upload videos.
On 23rd November 1926, a Norwegian chemical engineer Erik Rotheim invented the first aerosol spray can in Oslo in Norway. The American inventor Lyle Goodhue and William Sullivan invented the… Read more »
The Belgian clarinetist Adolphe Sax in 1846 invented the saxophone that is musical instrument of woodwind of single reed and is generally made of brass. It is mainly used in… Read more »
The modern safety pins were invented in the year 1849 by Walter Hunt by twisting a length of wire.
Swede Gustaf Erik Pasch invented the safety match in the year 1844. Later Johan Edvard Lundstrom of Sweden improved the design and introduced the first red phosphorus safety matches in… Read more »
Elisha Gray in the year 1876 invented the first electric synthesizer. The first programmable synthesizer called as RCA Mark 2 Sound Synthesizer was developed in 1958 by the Columbia-Princeton Electronic… Read more »