- 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.
- Hinkhouse Peak (Wikipedia)
Hinkhouse Peak is a 7,560-foot-elevation (2,300-meter) mountain summit located on the shared border of Okanogan County and Chelan County in Washington state. It is part of the Okanogan Range which is a sub-range of the North Cascades Range. Hinkhouse Peak is situated on land administered by the Okanogan–Wenatchee National Forest. The nearest higher neighbor is Liberty Bell Mountain, 1.52 miles (2.45 km) to the south.