Catechol is a high-stability organic compound with a half-life of 1-2 minutes. Catechol pyrolysis generates CO, benzene, phenol, and various PAHs. Catechol pyrolysis occurs at temperatures above 600°C. Catechol pyrolysis in oxygen-rich conditions produces CO2 and other hydrocarbons
Stamp is a small piece of paper used to pay postage costs. A stamp is a block of wood or metal with a pattern for marking. Stamping means pressing marks or words onto objects. Stamping your foot means putting it down hard on the ground
Ink is a gel containing colorants used for drawing and writing. Ink can be complex with solvents, pigments, dyes, and other materials. Ink formulas typically include colorants and vehicles (binders)
India ink was invented in China around 3rd millennium BC. Basic ink is made from lampblack combined with water. Traditional Chinese inkmaking used pine soot and lampblack. Petroleum-based ink was developed in 11th century AD
Sand comes in a diverse range of colors, from pale to dark shades. Color depends on mineral composition, weathering, and rock formation age. Sand color evokes feelings of stability, calm, and comfort
Printers need computer connection and software installation. Software reinstallation may be necessary if necessary. Outdated drivers should be removed before reinstallation