Whirlpool: Water, Tide, Maelstrom, Vortex, Waterfall, Niagara Falls, Saltstraumen, Tidal Bore, Gaul, Gaulish language, Ceramic, Nonmetal - Tapa blanda

Sinopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A whirlpool is a swirling body of water usually produced by ocean tides. The vast majority of whirlpools are not very powerful. More powerful ones are more properly termed maelstroms. Vortex is the proper term for any whirlpool that has a downdraft. (Technically, these approximate to a ''free vortex'', in which the tangential velocity (v) increases as the centre line is approached, so that the angular momentum (rv) is constant). Very small whirlpools can easily be seen when a bath or a sink is draining, but these are produced in a very different manner from those in nature. Smaller whirlpools also appear at the base of many waterfalls. In the case of powerful waterfalls, like Niagara Falls, these whirlpools can be quite strong. The most powerful whirlpools are created in narrow shallow straits with fast flowing water.

"Sinopsis" puede pertenecer a otra edición de este libro.