Constante de Planck
Autor: Joaquim Francisco Pereira | Publicado: 2011-09-30T23:30:00-03:00

 Determinação da Constante de Planck a partir do espectro de emissão de um LED.  




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 <![endif]-->  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; "Para um melhor resultado seria necessário obter a curva característica de cada LED, entretanto, utilizando o comprimento de onda do LED vermelho, isto é, um valor da ordem de 650 nm obtém-se para a constante de Planck um valor de: h = 5,7 x 10-34 J.s."  "Para o LED verde utilizando um o comprimento de onda da ordem de 560 nm, obtemos para a constante de Planck um valor de: h = 5,8 x 10-34 J.s."&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  Considerando todas as aproximações realizadas, os valores encontrados são muito razoáveis e satisfatórios para um experimento a ser realizado no Ensino Médio.
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 <![endif]-->  Bibliografia consultada: &nbsp;- Cavalcante, Marisa Almeida – Tavolaro, Cristiane R. C. Física Moderna Experimental. &nbsp;2ª edição – São Paulo, 2007 – Editora Manole.<!--[if gte mso 9]>     Normal   0         21         false   false   false      PT-BR   X-NONE   X-NONE                                                     MicrosoftInternetExplorer4                                                   <![endif]--><!--[if gte mso 9]>  <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true"
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   UnhideWhenUsed="false" Name="Medium List 2 Accent 5"/>   <w:LsdException Locked="false" Priority="67" SemiHidden="false"
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   UnhideWhenUsed="false" Name="Colorful List Accent 6"/>   <w:LsdException Locked="false" Priority="73" SemiHidden="false"
   UnhideWhenUsed="false" Name="Colorful Grid Accent 6"/>   <w:LsdException Locked="false" Priority="19" SemiHidden="false"
   UnhideWhenUsed="false" QFormat="true" Name="Subtle Emphasis"/>   <w:LsdException Locked="false" Priority="21" SemiHidden="false"
   UnhideWhenUsed="false" QFormat="true" Name="Intense Emphasis"/>   <w:LsdException Locked="false" Priority="31" SemiHidden="false"
   UnhideWhenUsed="false" QFormat="true" Name="Subtle Reference"/>   <w:LsdException Locked="false" Priority="32" SemiHidden="false"
   UnhideWhenUsed="false" QFormat="true" Name="Intense Reference"/>   <w:LsdException Locked="false" Priority="33" SemiHidden="false"
   UnhideWhenUsed="false" QFormat="true" Name="Book Title"/>         <![endif]--><!--[if !mso]> 
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 <![endif]-->&nbsp;&nbsp;&nbsp;&nbsp; - Experiências em Física Moderna.  Diversos autores. Disponível em: www.sbfisica.org.br/fne/Vol6/Num1/exper-fis-mod.pdf