Dye wood, fungi, and lichens. Most dyes are synthetic, i.e., are man-made from petrochemicals. Other than pigmentation, they have a range of applications including organic dye lasers, optical media (CD-R) and camera sensors (color filter array). Textile dyeing dates back to the Neolithic period. Throughout history, people have dyed their textiles using common, locally available materials. Scarce dyestuffs that produced brilliant and permanent colors such as the natural invertebrate dyes Tyrian purple and crimson kermes were highly prized luxury items in the ancient and medieval world. Plant-based dyes such as woad, indigo, saffron, and madder were important trade goods in the
Romans 2 Romans 2 Romans 2 is the second chapter of the Epistle to the Romans in the New Testament of the Christian Bible. It is authored by Paul the Apostle, but written by an amanuensis, Tertius, while Paul was in Corinth, in winter of AD 57-58. Paul wrote to the Roman Christians in order to give them a substantial resume of his theology. Although "the main theme of the Epistle [is] the doctrine of justification by faith", in verse 6 Paul "lays down with unmistakable definiteness and precision the doctrine that works, what a man has done, the moral tenor of