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3 giorni fa · Copper is a chemical element; it has symbol Cu (from Latin cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color.
1 giorno fa · Wireless network technologies. In telecommunications, 5G is the fifth-generation technology standard for cellular networks, which cellular phone companies began deploying worldwide in 2019, and is the successor to 4G technology that provides connectivity to most current mobile phones. Like its predecessors, 5G networks are cellular networks, in ...
2 giorni fa · J. Robert Oppenheimer (born Julius Robert Oppenheimer; / ˈɒpənhaɪmər / OP-ən-hy-mər; April 22, 1904 – February 18, 1967) was an American theoretical physicist. He was director of the Manhattan Project 's Los Alamos Laboratory during World War II and is often called the "father of the atomic bomb ". Born in New York City, Oppenheimer ...
1 giorno fa · India, officially the Republic of India ( ISO: Bhārat Gaṇarājya ), [21] is a country in South Asia. It is the seventh-largest country by area; the most populous country as of June 2023; [22] [23] and from the time of its independence in 1947, the world's most populous democracy.
5 giorni fa · Website. sdgs .un .org. The 2030 Agenda for Sustainable Development, adopted by all United Nations members in 2015, created 17 world Sustainable Development Goals ( SDGs ). They were created with the aim of " peace and prosperity for people and the planet..." [1] [2] [3] – while tackling climate change and working to preserve oceans and forests.
5 giorni fa · Iodin atau yodium adalah sebuah unsur kimia dengan lambang I dan nomor atom 53. Menjadi unsur halogen stabil terberat, ia merupakan padatan nonlogam semi-berkilau pada kondisi standar yang melebur membentuk cairan berwarna lembayung tua pada suhu 114 °C (237 °F), dan mendidih menjadi gas berwarna lembayung pada 184 °C (363 °F).
4 giorni fa · Phosphorus is an essential mineral for humans listed in the Dietary Reference Intake (DRI). Food-grade phosphoric acid (additive E338 [104]) is used to acidify foods and beverages such as various colas and jams, providing a tangy or sour taste. The phosphoric acid also serves as a preservative. [105]
