Transcript Wave Properties of Light

Wave Properties
By : Kara Dixon
Reflection
The angles are always measured with
respect to the normal to the surface.
 The law of reflection is also consistent with
the particle picture of light.
 Angle of Incidence is always equal to the
angle of Reflection.
 67 degrees incidence is equal to 67
degrees reflection, 45 = 45, 37 = 37

Reflection
When
a light ray reflects off the surface of a
mirror it follows a path similar to a behavior to
a pool ball bouncing off of a cushion on a pool
table.
The wave reflected from the surface forms an
angle equal to the one formed by its path.
Reflection is defined as the bouncing back of
a ray of light into the same medium.
Refraction



is the bending of light as
it passes between
materials, such as solid,
liquids, gases.
The more dense the
material, the slower the
speed of light in that
material.
The frequency of light
does not change when it
passes from one medium
to another.
Refraction
Refraction
is the bending of light rays when
passing from one transparent material to
another.
The refraction of light when it passes from a
fast medium to a slow medium bends the light
ray toward the normal to the boundary
between the two media.
The amount of bending depends on the
Refraction by Dispersion


Rainbows are caused by a combination of the refraction
of light as it bends twice, once going in(slows down), and
once going out(speeds up.) Raindrops act like prisms.
Light is composed of waves of different wavelengths that
correspond to different colors of lights, giving us the
colors of the rainbow (ROYGBIV)
Diffraction
This is the bending of light waves around
obstacles in its path.
 Ex. Owls for instance are able to
communicate across long distances due to
the fact that their long-wavelength hoots are
able to diffract around forest trees.

Diffraction
Diffraction
is the bending of light waves
around obstacles in its path.
Diffraction limits the resolving power of
microscopes and other magnifying devices.
If the object being used is smaller than the
wavelength of light, then the light diffracts
around the object.
Constructive Interference


Constructive interference
also occurs when the
trough of one wave is
super positioned upon the
trough of another wave.
Ex.
Destructive Interference

When the crest of one
wave passes through, or
is super positioned upon,
the trough of another
wave, we say that the
waves destructively
interfere.

Ex.
transmission


Is the passage of EM
wave through a
medium.
If the light reflected
from objects did not
pass though the air,
windows, or most of
the eye, we could not
see the objects.
Absorption


Is the disappearance
of and EM wave into
the medium.
Affects how things
look, because it limits
the light available to
be reflected or
transmitted,