Deprecated: Use of MediaWiki\Parser\ParserOutput::setPageProperty with non-string value for smw-semanticdata-status was deprecated in MediaWiki 1.42. [Called from SMW\ParserData::markParserOutput in /var/www/html/extensions/SemanticMediaWiki/src/ParserData.php at line 355] in /var/www/html/includes/debug/MWDebug.php on line 385 Das hamiltonsche Wirkungsprinzip – PhysikWiki