Period 5 element Klaproth named the new element in 1798 after the Latin word for "earth", "tellus". Gold telluride minerals (responsible for the name of Telluride, Colorado) are the most notable natural gold compounds. However, they are not a commercially significant source of tellurium itself, which is normally extracted as by-product of copper and lead production. Tellurium is commercially primarily used in alloys, foremost in steel and copper to improve machinability. Applications in solar panels and as a semiconductor material also consume a considerable fraction of tellurium production. Iodine is a chemical element with the symbol I and atomic number 53. The name
CU Online CU Online CU Online is one of the first fully accredited online education programs, created in 1996 by the University of Colorado Denver (CU Denver). With CU Online, the pedagogy of CU Denver faculty has been extended globally, allowing local students as well as international students to partake in the same education. Initially launching with three online courses, CU Online has expanded its catalog to over 450 CU Denver online courses, with 18 full CU Denver degree programs and 12 certificates that can be completed entirely online. The online courses themselves are considered just another option for CU Denver students,