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Optique Géométrique et Ondulatoire
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Cards (22)
What is the branch of optics that treats light as rays?
Geometric Optics
How does geometric optics simplify the study of light?
By treating light as rays traveling
straight
What phenomena does geometric optics help to understand?
How
lenses
and
mirrors
work
In geometric optics, how is light viewed?
As rays traveling in
straight lines
What does the reflection of light involve?
Light
bouncing
off
a
surface
What is the angle of incidence?
The angle
light
hits the surface
What is the angle of reflection?
The angle
light
bounces back
What does the law of reflection state?
The
angle of incidence
equals the
angle of reflection
What is refraction?
Light bending
as it passes through materials
What does Snell's law describe?
How much
light
bends when entering a new medium
What do n1 and n2 represent in Snell's law?
The
refractive
indices
of
two
materials
What happens when light enters a medium with a lower refractive index?
It speeds up and bends away from the
normal
What is the definition of the refractive index?
Measure of how much
light
slows down
What are the steps to apply geometric constructions to form images?
Identify the object and its position.
Draw
principal rays
from the object:
Ray parallel to
optical axis
through focal point.
Ray through center of
lens
continues straight.
Ray through focal point becomes parallel after
refraction
.
Determine where rays
converge
or
diverge
to form the image.
How do geometric constructions help in forming images?
By tracing
light rays
in
optical
systems
What type of image is formed by a converging lens when the object is beyond the focal length?
A
real and inverted image
What is a common application of geometric optics in eyeglasses?
Correcting vision by
bending light
What are some applications of geometric optics?
Eyeglasses
& Contact Lenses: Correct vision
Cameras
: Focus light to create images
Telescopes
&
Microscopes
: Magnify objects
Binoculars
: Enhance long-distance vision
Projectors
: Display images on large screens
Lasers
: Emit coherent light for precision
How do cameras utilize geometric optics?
By using
lenses
to focus light onto
sensors
What benefit do telescopes provide through geometric optics?
They magnify distant objects for
observation
How do projectors use geometric optics?
To display
images
or
videos
onto screens
What is a benefit of using lasers in geometric optics?
They provide
precision
in cutting and medical procedures
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