FC05 FC06 FC07 Flashcards

1
Q

vitesse de porpagation de la lumière?

=c

A

c=3,00x10^8 m.s^-1

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2
Q

dispertion?

A

spectre de radiation monochromatiques

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3
Q

λ ?

A

Lambda: longeur d’onde 10^-9

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4
Q

types de spectres?

A

1: raie d’émission (gaz exicité)
2: continue (chaud)

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5
Q

quelle est l’étoile la plus chaude?

A

bleu>rouge

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6
Q

milieu homogène et transparent?

A

: ligne lumineuse droite

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7
Q

c’est quoi la réfraction?

A

la transition n1 à n2 avec changement léger de direction de la lumière

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8
Q

c’est quoi la réfléction?

A

le rebondissement sur la surface de séparation de la lumère

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9
Q

équation réfraction?

A

n1xsin i1=n2xsin i2

descrates

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10
Q

égalité reflection?

A

i1=1r

Descartes

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11
Q

role du prisme?

A

dispertion des longeurs différentes monochromatiques, donc avec des angles différentes

Descartes

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12
Q

𐤃 ?

A

Axe optique

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13
Q

l’image n’est pas sur l’écran?

A

irréelle ou l’inverse réelle

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14
Q

pupille?

à quoi ça sert?

A

diaphragme

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15
Q

lentille convergente?

A

cristallin

corréction lunettes

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16
Q

écran?

A

rétine

17
Q

égalisation de la distance focale de près par le cristallin?

A

il accomode

18
Q

comparaison objet et image?

A

sens (renversées ou non)
position
direction
+- grande

19
Q

∣γ∣?

A

Gamma: valeur absolu d’agrandissement

20
Q

∣γ∣ formule?

A

A’O/AO = A’B’/AB