What is femtometer?

What is femtometer? Definition of femtometer : a unit of length equal to 10−15 meters : one quadrillionth of a meter. What is the value […]

Where is Arabia Petraea?

Where is Arabia Petraea? It consisted of the former Nabataean Kingdom in Jordan, southern Levant, the Sinai Peninsula and northwestern Arabian Peninsula….Arabia Petraea. Provincia Arabia […]