Where no one has gone before

Photo by Stefan K on Unsplash

Photo by Stefan K on Unsplash

Photo by Thomas Bormans on Unsplash

Photo by Peter Mitchell on Unsplash

Photos by Gunnar Bittersmann

Photo by Alvesgaspar, CC BY-SA 3.0

Photo by Alvesgaspar, CC BY-SA 3.0

Photo by Black Chitsulo on Unsplash Photo by Jiyeon Park on Unsplash

sin φ = y ⁄ r cos φ = x ⁄ r tan φ = y ⁄ x

y = r sin φ x = r cos φ

x = r sin ψ y = −r cos ψ

The cuckoo-clock incident
presented by Gunnar Bittersmann
Black Forest photos by Gunnar Bittersmann