School Road
Introduction
The photograph on this page of School Road by Lairich Rig as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk
School Road
Image: © Lairich Rig Taken: 5 Sep 2019
About 500 metres ahead, this road meets the main road that runs through Gartocharn. In the foreground is a sight that is familiar in rural and urban settings whenever a thin layer of water is flowing down an incline, whether on a road or elsewhere: a moving pattern of terrace-like waves. A few moments of observation will show that these waves travel at slightly different speeds, so that some end up merging. These, and similar phenomena occurring in other settings, are called "roll waves"; that is a useful search term for those who wish to know more, although an analysis of why these waves form requires some advanced undergraduate-level mathematics and physics (one of my physics lecturers once mentioned these waves in passing, from which time I have been more aware of them).
Images are licensed for reuse under creativecommons.org/licenses/by-sa/2.0
Image Location
Latitude
56.037156
Longitude
-4.528136