- Gabriel’s horn (Wikipedia)
A Gabriel’s horn (also called Torricelli’s trumpet) is a type of geometric figure that has infinite surface area but finite volume. The name refers to the Christian tradition where the archangel Gabriel blows the horn to announce Judgment Day. The properties of this figure were first studied by Italian physicist and mathematician Evangelista Torricelli in the 17th century.
- Al-Karak (Wikipedia)
Al-Karak (Arabic: الكرك) is a city in Jordan known for its medieval castle, the Kerak Castle. The castle is one of the three largest castles in the region, the other two being in Syria. Al-Karak is the capital city of the Karak Governorate.