Physique chap 1 Flashcards

1
Q

Types de sources lumineuses

A

Source étendue et source ponctuelle

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2
Q

Source étendue

A

Lumière vient de plusieurs points

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3
Q

Source ponctuelle

A

Lumière vient d un seul point

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4
Q

Quantité de lumière

A

Faisceau, pinceau et rayon lumineux

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5
Q

Faisceau

A

Cone

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6
Q

Pinceau

A

Cylindre

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7
Q

Rayon

A

pinceau mince

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8
Q

Zone ombre

A

Pas lumière, écran noir

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9
Q

Zone pénombre

A

Reçoit une partie de la lumière, écran gris

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10
Q

Zone clarte

A

receipt tout la lumière, écran blanc

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11
Q

Conditions qui favorise production d’ombre plus nette

A

1.Rapproche l’ecran a l’obstacle
2.Eloigne la source de l’obstacle
3.Reduis la taille de la source
4. Aggrandit l’obstacle

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12
Q

Propagation de la lumiere:

A

En ligne droite, propage mieux dans le vide, vitesse de la lumière dans vide = 3 x 10 a la 8 m/s

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13
Q

Eclipse

A

Disparition totale ou partielle d un astre pas interposition d un autre astre

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14
Q

Type d eclipse

A

Solaire et Lunaire

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15
Q

Lunaire

A

Terre soit entre soleil et lune

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16
Q
A