About: Anacoustic zone     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:Settlement, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)
QRcode icon
http://dbpedia.demo.openlinksw.com/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FAnacoustic_zone&invfp=IFP_OFF&sas=SAME_AS_OFF

The anacoustic zone, also known as the zone of silence, is the region of the atmosphere of Earth above about 160 kilometers (99 mi) where the air density becomes so low that air molecules are not close enough to support transmission of sound waves within the hearing range. As altitude increases through the atmosphere, the first sound waves to disappear are the high pitched, high-frequency (short wavelength) ones. At a certain altitude (roughly 160 kilometers (99 mi)) even the lowest frequency tone that can be heard by a human being (around 20 Hz) no longer can be transmitted.

AttributesValues
rdf:type
rdfs:label
  • Anacoustic zone (en)
rdfs:comment
  • The anacoustic zone, also known as the zone of silence, is the region of the atmosphere of Earth above about 160 kilometers (99 mi) where the air density becomes so low that air molecules are not close enough to support transmission of sound waves within the hearing range. As altitude increases through the atmosphere, the first sound waves to disappear are the high pitched, high-frequency (short wavelength) ones. At a certain altitude (roughly 160 kilometers (99 mi)) even the lowest frequency tone that can be heard by a human being (around 20 Hz) no longer can be transmitted. (en)
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
sameAs
dbp:wikiPageUsesTemplate
has abstract
  • The anacoustic zone, also known as the zone of silence, is the region of the atmosphere of Earth above about 160 kilometers (99 mi) where the air density becomes so low that air molecules are not close enough to support transmission of sound waves within the hearing range. As altitude increases through the atmosphere, the first sound waves to disappear are the high pitched, high-frequency (short wavelength) ones. At a certain altitude (roughly 160 kilometers (99 mi)) even the lowest frequency tone that can be heard by a human being (around 20 Hz) no longer can be transmitted. With increasing height, the atmosphere becomes more rarefied, which increases the mean time between collisions of molecules (also known as mean free time). The maximum frequency a sound wave can have and still be able to propagate in a gas is roughly the inverse of the mean free time (molecular mean free path divided by average molecular speed). Hence the more rarefied a gas medium, the lower is the cut-off frequency for sound propagation in that medium. (en)
gold:hypernym
prov:wasDerivedFrom
page length (characters) of wiki page
foaf:isPrimaryTopicOf
is Link from a Wikipage to another Wikipage of
is foaf:primaryTopic of
Faceted Search & Find service v1.17_git139 as of Feb 29 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 59 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software