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narrow-band emission spectrum

Italian translation: spettro di emissione a banda stretta

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:narrow-band emission spectrum
Italian translation:spettro di emissione a banda stretta
Entered by: Cristina Giannetti
Options:
- Contribute to this entry
- Include in personal glossary

09:32 May 19, 2005
English to Italian translations [PRO]
Other / lighting
English term or phrase: narrow-band emission spectrum
In an LED, a solid-state crystal is induced to emit light by passing an electric current through it. The type of crystals used have two sections or regions: a region with a surplus of electrons (n-type semiconductor) and a section with a deficit of electrons (p-type semiconductor). When a direct voltage is applied, electrons flow across the junction between the two regions, generating light in the process.
The light thus created has a narrow-band emission spectrum which differs according to the semiconductor material used. White LEDs can be created by additive colour mixing or by luminescence conversion. Their colour temperatures are between 4,000 and 7,000 Kelvin and colour rendering index Ra around 70.
spettro di emissione NARROW BAND?
Cristina Giannetti
Local time: 10:53
spettro di emissione a banda stretta
Explanation:
vedere i siti

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Note added at 2 mins (2005-05-19 09:35:09 GMT)
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sito:
http://www.cndstudio.it/c-01.html

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Note added at 6 mins (2005-05-19 09:38:20 GMT)
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sito:
http://ulisse.sissa.it/SingleQuestionAnswerProfile.jsp?quest...
Selected response from:

Giorgio Testa
Local time: 10:53
Grading comment
4 KudoZ points were awarded for this answer

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Summary of answers provided
4 +10spettro di emissione a banda strettaGiorgio Testa


  

Answers


0 min   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +10
spettro di emissione a banda stretta


Explanation:
vedere i siti

--------------------------------------------------
Note added at 2 mins (2005-05-19 09:35:09 GMT)
--------------------------------------------------

sito:
http://www.cndstudio.it/c-01.html

--------------------------------------------------
Note added at 6 mins (2005-05-19 09:38:20 GMT)
--------------------------------------------------

sito:
http://ulisse.sissa.it/SingleQuestionAnswerProfile.jsp?quest...

Giorgio Testa
Local time: 10:53
Native speaker of: Native in ItalianItalian
PRO pts in category: 194

Peer comments on this answer (and responses from the answerer)
agree  Francesca Siotto
0 min
  -> grazie Francesca!

agree  PaoloM
2 mins
  -> grazie Paolo!

agree  Luciana Cortelazzi
3 mins
  -> grazie Luckylu!

agree  Alberto Ladavas: assolutamente sì, in contrasto con uno "spettro di emissione a banda larga"
5 mins
  -> grazie Alberto!

agree  Andrea Re: ma siete troppo veloci. Datemi un momento per rispondere!!!
6 mins
  -> grazie Andrea!

agree  Francesco Volpe
15 mins
  -> grazie Francesco!

agree  Alberta Batticciotto
19 mins
  -> grazie Alberta!

agree  Valentina Viali
40 mins
  -> grazie comncom!

agree  Filippa Addis
3 hrs
  -> grazie Filippa!

agree  SILVIO CORRAO
14 hrs
  -> grazie Silvio!
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