http://netvouz.com/url/b60f2a35b2709bd5e8c09fadca1d705f?feed=rss Info about a link http://physics.nist.gov/cuu/ Official NIST reference providing essential information and background information. Includes: Values of the fundamental physical constants and related information, Searchable bibliography on the constants, In-depth information on the SI, the modern metric system, and Guidelines for the expression of uncertainty in measurement. Fyzika > Fyzikální vzdělávání, zdroje pro učitele > On line materiály richter Wed, 07 Sep 2011 19:00:07 GMT