The oldest â and perhaps simplest and most natural form of marketing â is 'word of mouth' (WOM) marketing, in which consumers convey their experiences of a product, service or brand in their day-to-day communications with others.taying ahead of the consumer is an important part of a marketer's job. It is important to understand the marketing environment in order to comprehend the consumers concerns, motivations and to adjust the product according to the consumers needs.
In 1925, Ernst began using the technique of frottage, which involves laying a sheet of paper over a textured surface and rubbing it with charcoal or graphite (the same process can be used to create a rubbing of a coin or an engraved surface).
Froth flotation. Diagram of a cylindrical froth flotation cell with camera and light used in image analysis of the froth surface. Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.