âFading occurs when any chemical process breaks the sequence of conjugated double bonds constituting the chromophore - the dye moiety that imparts colour.â âSome other dye systems are based on the chromophores triphenylmethane, xanthene, anthroquinone, indigo, and phthalocyanine.â
El Paso (/Él ËpÃ¦soÊ/ ell PASS-oh; from Spanish, the pass) is the seat of El Paso County, Texas, United States. The city is situated in the far western corner of the U.S. state of Texas.
El Paso is the largest bilingual, binational work force in the Western Hemisphere. Situated on the Rio Grande across the border from JuÃ¡rez (in the state of Chihuahua, Mexico), it creates a combined international metropolitan area, and has also been ranked the safest large city in the U.S. for four consecutive years. El Paso and JuÃ¡rez, along with the city of Las Cruces, have a combined population of 2.7 million people.