Why is blue blue?

Why is blue blue?

Why is blue blue?

When the blood vessels burst under the effect of a shock, the blood spills under the epidermis, giving a bluish color to the skin which only lets through the wavelengths of light corresponding to the blue.

Which civilization invented the first synthetic pigment?

Egyptian blue is the first pigment artificial created by man almost 5000 years ago.

What is the difference between a pigment and a color?

A pigment is a molecule and not a color. The pigment is a chemical element which makes it possible to create a color, and therefore a paint or a dye, by mixing it with a binder. The pigments can be of mineral, animal or vegetable or synthetic origin.

What is Pigment Making?

The manufacture of pigments and other dyestuffs is an important sector of the chemical industry. The synthetic pigments obtained in mineral chemistry are derived from sulphides and metal oxides, iron, lead, cadmium, chromium, cobalt, mercury or titanium.

What are the different types of pigments?

In pigments, we can find many chemical compounds such as carbon, zinc or iron oxides, cadmium sulphide, etc. Natural pigments can be extracted from various minerals. Lapis lazuli, for example, makes it possible to obtain an ultramarine color pigment. Pigments can also come from the living world.

What are biological pigments?

Biological pigments extracted from tinctorial plants are organic compounds. The pigment is extracted from various constituent parts of the plant: the leaves (woad, chlorophyll (E140), anthocyanins (E163)), the roots (madder) or the bark (quercitron).