This HTML5 document contains 4 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

PrefixNamespace IRI
n4google.
isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:287727637
rdf:type
prov:Entity
prov:value
Theoretically, frequencies higher than 20 MHz can be used, but in practice such high frequencies are difficult to generate and can cause problems such as interference with other electrical devices.
prov:wasQuotedFrom
n4:es
Subject Item
isap:110104663
prov:wasDerivedFrom
isa:287727637