Modern printing inks are made with oils or petroleum distillates combined with organic pigments. Black ink is made with carbon nanotubes. More traditional inks are made with a mixture of dye and oil or water.Know More
The earliest known inks in China, India and Egypt were made from plant dyes and ground minerals such as graphite. Inks have also been taken from cephalopods such as squid and cuttlefish. Animal glue and gum arabic were also often used as binding agents. Many different cultures came to the discovery of ink independently and there is a wide variety of unique formulas for it.
Modern inks can be roughly divided into those used with printers and those used for writing. Color printing inks are frequently made of linseed or soybean oil with natural pigments made up of salts containing dyes. These inks may also use a heavy petroleum distillate for the solvent in place of oils. Carbon nanotubes are used for black ink in printers as they can be expelled without clogging the nozzle.
Pens for writing traditionally used a mixture of water and dye, but modern pens now use an oil-based system that resembles a soft paste. These inks dry more quickly and have less of a tendency to smear.Learn more about Inventions
No direct answer exists for this question, other than that it has been around since the beginning of civilization, according to The Story of Mathematics. Early math was about patterns and counting, which is evident in the tool marks on bone made by the cavemen.Full Answer >
The first television, an electromechanical device capable of producing very small and blurry monochrome images, was developed in 1884. The first transmission of images using this device occurred in 1925. Philo Farnsworth developed the first electronic television in 1927, and the first TV station broadcast the following year.Full Answer >
The microwave oven was patented on October 8, 1945 by the company Raytheon. At the time, it was called the Radarange. It wasn't until 1967 that the microwave was more affordable and reasonably sized.Full Answer >
The cigarette lighter was invented before the first conventional, friction-based match. The German chemist Johann Dobereiner invented the lighter in 1823 using hydrogen and platinum. The friction-match was invented in 1826 by English chemist John Walker.Full Answer >