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Brownian Motion Experience "home" on friction piers

experimentosespectaculares sometimes to Physics not need sophisticated equipment delaboratorio. The most common things that can be found at home nospermiten perform simple and spectacular experiences.

quienn is home "a couple of old telephone books? Experience esmuy silly but the result is very striking. Simply place both laspáginas directories of a page alternately placing each one between two pages of LaOtra. After you make this bullshit is so interesting. Al levantaruna of guidelines for holding back the other remains. Puedesaprovechar to bet your coffee with someone challenging him to separate guides lasd pulling the two backs and without breaking. Quiet teaseguro will not succeed, it is not the thing to invite coffee morethan necessary.

Paraexplicar this we must resort to friction. When intentamosdeslizar one body on another appears a force between them that seopone the possible move, this force is known as a force DeRozan. In the experiment we took the big esmuy friction force for two reasons: the roughness of the paper pages and Lagran contact surface between the two. We must consider each page queaunque not too large (the about 1 decímetrocuadrado) each guide has over 300 pages which gives us a surface area of \u200b\u200babout 3 square meters. For this reason the friction force are large or two people pulling each conseguiríansepararlas guide.

Esteexperimento has become a classic on the Internet. In these vídeosde Discovery Channel you can see the enormous efforts made two telephone paraseparar intertwined in this way. Finalmenteutilizan two people pulling on a rope from the guides, intentancon two cars, ... Finally, they must resort to heavy artillery.