The word emulsion comes from the Latin mulgeo, mulgere to milk, [specify] as milk is an emulsion of fat and water, along with other components. Two liquids can form different types of emulsions. As an example, oil and water can form, first, an oil-in-water emulsion, wherein the oil is the dispersed phase, and water is the dispersion medium.
Historians consider the first touch screen to be a capacitive touch screen invented by E.A. Johnson at the Royal Radar Establishment, Malvern, UK, around 1965 - 1967. The inventor published a full description of touch screen technology for air traffic control in an article published in 1968.
Touchscreen displays are common features in modern cars, but many add frustration instead of easing it. The default explanation is that the technology is new (some of it is), but the first touchscreen system available in a production car dates back to the 1986 Buick Riviera's Graphic Control Center.