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Polvere Indice Polvere di casa | Pericoli per la salute | Rischi nell'industria | Note | Voci correlate | Altri progetti | Collegamenti esterni | Menu di navigazioneIUPAC Gold Book, "dust"Wikimedia CommonsWikimedia CommonspolverePolverePolvereLa polvere al microscopioM4057011-3

Materiali granulari


materiaparticellediametromicrometrimicronsolidi granularisolidifluidi non newtonianiparticolatoTerraatmosferasuoloventovulcanicheinquinamentopulviscolo atmosfericoclimasalute umanaspazio esternopolvere interstellareluce zodiacalegassistemi planetaripelleunghievestitiaspirapolverestracciscopaacarireazioni allergiche












Polvere




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Nota disambigua.svgDisambiguazione – Se stai cercando altri significati, vedi Polvere (disambigua).

Polvere è un nome generico attribuito alla materia suddivisa in particelle di diametro compreso indicativamente fra 1 e 100 micrometri (o micron).[1]. Essendo dei solidi granulari, presentano un comportamento fisico complesso: a grande scala si può talvolta considerare un comportamento intermedio tra quello dei solidi non granulari e quello dei fluidi non newtoniani. La polvere dispersa in un ambiente gassoso è detta particolato.


Sulla Terra, la polvere si trova nell'atmosfera e proviene da diverse sorgenti, come il suolo (la polvere può essere sollevata dal vento), eruzioni vulcaniche, e l'inquinamento. Le polveri sospese in aria (pulviscolo atmosferico) hanno effetti rilevanti sul clima e sulla salute umana. La polvere è anche presente nello spazio esterno (polvere interstellare), causando la luce zodiacale. Le nubi di gas e polvere sono considerati inoltre i precursori dei sistemi planetari.




Indice





  • 1 Polvere di casa


  • 2 Pericoli per la salute


  • 3 Rischi nell'industria


  • 4 Note


  • 5 Voci correlate


  • 6 Altri progetti


  • 7 Collegamenti esterni




Polvere di casa |




Polvere di casa


La polvere che si accumula in casa è composta da polveri atmosferiche insieme a polvere generalmente provocata dagli abitanti a causa di frammenti di pelle, unghie, e fibre dei vestiti. Viene generalmente rimossa con l'aspirapolvere, con degli stracci, o con la scopa.


Gli acari della polvere si alimentano con i componenti organici presenti nella polvere casalinga; le loro feci vanno ad alimentarla e possono provocare reazioni allergiche.



Pericoli per la salute |


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Magnifying glass icon mgx2.svg
Lo stesso argomento in dettaglio: Particolato.


Rischi nell'industria |





Magnifying glass icon mgx2.svg
Lo stesso argomento in dettaglio: Esplosione di polveri.


Note |



  1. ^ (EN) IUPAC Gold Book, "dust"



Voci correlate |


  • Materia granulata

  • Nanopolvere

  • Particolato

  • Polvere cosmica

  • Esplosione di polveri


Altri progetti |



Altri progetti


  • Wikiquote

  • Wikizionario

  • Wikimedia Commons



  • Collabora a Wikiquote Wikiquote contiene citazioni sulla polvere


  • Collabora a Wikizionario Wikizionario contiene il lemma di dizionario «polvere»


  • Collabora a Wikimedia CommonsWikimedia Commons contiene immagini o altri file sulla polvere


Collegamenti esterni |





  • Polvere, su thes.bncf.firenze.sbn.it, Biblioteca Nazionale Centrale di Firenze. Modifica su Wikidata


  • (EN) Polvere, su Enciclopedia Britannica, Encyclopædia Britannica, Inc. Modifica su Wikidata

  • La polvere al microscopio (PDF), su funsci.it.


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