What is MENISCUS? The departure from a flat surface where a liquid meets a solid, due to surface tension. The effect can be seen clearly through the wall of a glass tube. The surface of water in air rises up the wall of the tube, while that of mercury is depressed, SIGHT-FEED LUBRICATOR.
An abandoned mud-covered scooter is found during the draining of the Canal Saint-Martin in Paris, France Charles Platiau/Reuters
For more photos : http://www.theepochtimes.com/n3/1935657-canal-saint-martin-paris-waterway-emptied-to-be-cleaned-for-1st-time-in-15-years/ Canal Saint-Marti... For more photos : http://www.theepochtimes.com/n3/1935657-canal-saint-martin-paris-waterway-emptied-to-be-cleaned-for-1st-time-in-15-years/ Canal Saint-Marti...