- Byblos (/ˈbɪblɒs/ BIB-loss; Greek: Βύβλος), also known as Jebeil, Jbeil or Jubayl (Arabic: جُبَيْل, romanized: Jubayl, locally Jbeil [ʒbeːl]; Phoenician: 𐤂𐤁𐤋, gbl, probably Gebal), is a city in the Keserwan-Jbeil Governorate of Lebanon. It is believed to have been first occupied between 8800 and 7000 BC and continuously inhabited since 5000 BC, making it one of the oldest continuously inhabited cities in the world. During its history, Byblos was part of numerous civilisations, including Egyptian, Phoenician, Assyrian, Persian, Hellenistic, Roman, Fatimid, Genoese, Mamluk and Ottoman. The city is a UNESCO World Heritage Site.
- Silicon (Wikipedia)
Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive. Silicon is a significant element that is essential for several physiological and metabolic processes in plants. Silicon is widely regarded as the predominant semiconductor material due to its versatile applications in various electrical devices such as transistors, solar cells, integrated circuits, and others. These may be due to its significant band gap, expansive optical transmission range, extensive absorption spectrum, surface roughening, and effective anti-reflection coating.