|
|
|
|
|
|
by gus_massa
4749 days ago
|
|
|
The video doesn't load for me. A similar article with video: https://news.ycombinator.com/item?id=5927510 (4 points, 5 hours ago, 3 comments) Extract of comments: ... In case this is not a joke ... It happens only at daytime ... so it's probably dew to the vibrations caused by the public ... because the friction between stone and glass is small. Note: An important detail is that it's not a "perfect circle", it's really only a half turn, so gravity is a possible explanation. Another thread: https://news.ycombinator.com/item?id=5927620 (3 points, 4 ours ago, 4 comments) |
|
|