Basic knowledge of color theory (4)

Fourth, opposition color theory In the previous article, we made a detailed discussion on the color vision theory of "the three primary colors of visual colors". Next, we will continue to study "the theory of color opposing colors". In 1878, the German physiologist Ewald, acco ......

Marketing Concept in Modern Commodity Packaging Design

Packaging is one of the most important links in the production and marketing of modern commodities. The pros and cons of packaging are directly related to the value of commodities in the market circulation. The initial packaging of goods is mainly for the convenience of customers. With the develop ......

Two strokes to buy affordable building materials

If you want to get the discount price of the material supplier, you may want to use more brains, such as the price of the goods. There are many skills to buy cheap and satisfactory building materials. The following two measures are worth trying. Trick one: First, the most eff ......

No scratches on printed surface during printing

4.5 The surface of the printed sheet must not have any scratches (anti-fouling mechanism) Scratches on the surface of the printed sheet are caused by the contact of the surface with other parts during the delivery process. Therefore, the way to avoid scratches is to keep the printed sheets suspen ......

Production and Exclusion of "Ghost" Phenomenon in …

People who often read newspapers often find one or more thin lines that are significantly shallower than the printed text on some large-format pictures or textured strips in newspapers. This is called “ghosting”. Most of them are "missing ghosts." Ghost shadows refer to impri ......

"The same kind of color" in the genus

Some of the red genus are of the same species, but the color of the heartwood is different. The authoritative timber expert LuisJ.Reys thinks that there are two types of Pterocarpus indicus Willd (Indian rosewood) heartwood, one is yellowish brown and the other is red; The dif ......