POLARIZARE Flashcards

1
Q

UNDA

A

OSCILATIE INSOTITA DE TRANSFER DE ENERGIE

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2
Q

POLARIZOR

A

dispozitiv cu ajutorul caruia lumina nepolarizata este filtrata astfel incat dincolo de polarizor sa avem doar lumina polarizata

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3
Q

Vectorul E pentru o unda polarizata

A

linear, circular, eliptic

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4
Q

intensitate I

A

proiectia vectorului E pe directia de polarizare

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5
Q

I=

A

E la a 2- a

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6
Q

SUBSTANTE CARE SUNT OPTIC ACTIVE

A

ROTESC PLANUL LUMINII POLARIZATE LINIAR

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7
Q

POLARIMETRIA

A

determinarea cantitativa a rotatiei planului luminii polarizate liniar

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8
Q

capacitatea unei substante optic active de a roti planul luminii polarizate liniar depinde de factorii

A
  • natura substantei optic active
  • lungimea de unda a luminii incidente
  • grosimea probei de solutie
  • temperatura solutiei
  • concentratia solutiei
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9
Q

unghiul cu care substanta optic activa va roti planul luminii polarizate liniar incidente se numeste

A

unghiul de rotatie specifica α

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10
Q

unghiul de rotatie specifica α reprezinta

A

unghiul de rotatie al unui strat de solutie de o anumita grosime, la o anumita temperatura cu o anumita concentratie

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11
Q

masurand unghiul α putem determina

A

caracteristici ale substantei, de ex C%

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12
Q

unghiul de rotatie specifica α este…. cu concentratia

A

DIRECT PROPORTIONAL

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