- Oxford (Wikipedia)
Oxford (/ˈɒksfərd/) is a city and non-metropolitan district in Oxfordshire, England, of which it is the county town. Founded in the 8th century, it was granted city status in 1542. The city is located at the confluence of the rivers Thames (locally known as the Isis) and Cherwell. It had a population of 163,257 in 2022. It is 56 miles (90 km) north-west of London, 64 miles (103 km) south-east of Birmingham and 61 miles (98 km) north-east of Bristol. The city is home to the University of Oxford, the oldest university in the English-speaking world; it has buildings in every style of English architecture since late Anglo-Saxon. Oxford’s industries include motor manufacturing, education, publishing, science, and information technologies.
- Phosphorus (Wikipedia)
Phosphorus is a chemical element; it has symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth. It has a concentration in the Earth’s crust of about one gram per kilogram (compare copper at about 0.06 grams). In minerals, phosphorus generally occurs as phosphate.