1. أ/عبير السريحي

2. When the passage of a beam of light across the surface of separation between ogg and
it happens to him:
Refraction
&
Reflection
&
Permeability
&
Scattering
&
Absorption
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3. # Refraction:
Is changing the course of photosynthesis as a result the beam path through the ogg different in density, changing speed
When moving the optical beam of lower intensity (Air) to the center of the largest density (glass), where(The speed of light in the center the largest density Less than its speed in the center less dense), the for the most part broken and a few parts of it happening a reflection of permeability and absorption and scattering
Why? Be the speed of light in the center the largest density of less than a speed of less dense in the center?
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4. أ/ عبير السريحي # Reflection:
Is the echo of light falling on the polished surface remains in the center itself does not enter the other center
When the ray of light moves from the center of the largest density (glass) to the center of lower density (air), the larger part of it is reflected and a few parts from him happens to them permeability and refraction and scattering and absorption
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5. Permeability:
Is the transmission of light when it falls on the surface of the separation between the ogg from the middle of the first second to the center so that they are equal in intensity and is called the medium in which light travels in rural transparent  Where the bulk permeability is happening to him and a few parts of it happening to her reflection and refraction and the absorption and dispersion
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6. أ/عبير السريحي

7. Important Note:
When the optical beam moves vertically, it does not get it implemented refraction or reflection
What is the reason why the pencil appears to be broken?
Experience: A Study of refractive coefficient of transparent material
Objective of the experiment
1 - Study of refraction happening in the way of a beam of
light when he moved from the center of a certain Central
Latest
2 - Calculate the refractive index of transparent material by measuring the incidence angle and refraction of light beam-winning St. through this article
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8. Tools used
Refraction:
We note that the bulk of the light ray  Happen to him so that the refraction of sight of perpendicular to the surface of the separation between the two communities when moving from the center of lower density to the center of the highest density
Refractive index:
Is the ratio between the speed of light in free space (vacuum) and speed in the center of a particular
The text of the law of Snell:
The ratio between the sine of the fall and pocket angle of refraction is equal to The ratio between the speed of light in the center the first and second speed in the middle
Where:
Refractive index (n), (c) the speed of light in a vacuum, (v )speed of light in the center II
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9. Account the refractive index by using the glass plate (parallel rectangles)
Incidence angle of the
beam incident and
pass-through in the air
Angle of refraction of the
refracted beam and
pass-through in the glass
Incidence angle of the
beam passes glass into
the air
Angle out
Perpendicular to the
surface AB
Perpendicular to the surface of the CD
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10. Account the refractive index by using the glass plate (parallel rectangles)
Is calculated by the Snell law
We note that the
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11. Incidence angle Refraction of light by the publication glass three -
First case: the beam passing through the prism inside the italic as in Figure
Incidence angle
Angle of refraction
The angle between the vertical
surface of the second publication
of the beam passing through the
prism within the article
Angle out
Head angle prism
Angle of deviation
Perpendicular to the
surface AB
Perpendicular to the
surface of the AC
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12. Angle of deviation:
Is the angle between the extension beams. Incident beam on the surface AB and the radius on the outside surface of the AC
Account the refractive index of article publication:
Possible to calculate the
refractive index of material  Published by the Snell law
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13. Second case: a lower end of delinquency.
Achieved a symmetry projector for the publication  When:
1 - within the beam passing through
the prism, parallel to the rule.
It also follows that 2-
Changing the angle of deviation d as changing the angle fall and reach the corner d to less
Value when there is a symmetry light
of the publication symbolized in this
case, the symbol D
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14. Account the refractive index of the article published in the case of a lower end of the deviation:
Is calculated by two laws:
Very Important Note:
The second law is only used in the development of the lower end of the deviation
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