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
The stone was discovered at Port Saint Julien, el-Rashid (Rosetta) on the Nile Delta in Egypt in 1799 CE by Pierre FranÃ§ois Xavier Bouchard. Bouchard was an officer of engineers in Napoleon's army, and he extracted the stone from an old wall which was being demolished as part