Light behaviors Properties of Light Index of Refraction of the Material Colors Enhanced Science (physics)

2.  Behaves like a particle and a wave.
 Is a radiant energy, usually referring
to electromagnetic radiation that is
visible to the human eye.

3.  Proposed by James Clark Maxwell
 He showed that electric and magnetic
fields were propagated together and
that their speed was identical with
the speed of light.

5.  Travels very fast – around 300, 000
km/s.
 Travels very fast in straight lines.
Laser

6.  Light travels much faster than sound.
1) Thunder and lightning
start at the same time,
but we will see the
lightning first.
2) When a starting pistol is
fired we see the smoke
first and then hear the
bang.

7.  Light exhibit the characteristics and
properties of a wave.

9. Apparent depth
-- is the illusion that objects under the water appear to
be nearer the surface than they really are.
--This is visible when an observer is standing beside
the swimming pool looking at an object under water.
*This phenomenon is a consequence of the bending of
light when light traverses the air-water boundary.

10. Refraction
-- is the bending of
light when it
travels from one
medium to another
of different optical
densities.

11.  Is the sluggishness of the atoms
of a medium to maintain the
absorbed energy before
reemitting.
* When light crosses the boundary
of two media of different optical
density, a change in speed takes
place. This change in speed is
manifested as bending of the light
ray.

12.  Light bends towards the normal when
traveling from a less dense medium to a
higher density medium.

13. *is a known indicator of the optical density of a
material.
* is a quantity that compares the speed of light
in that material to its speed in a vacuum.

15.  The only thing we can see is light.
 When the light bounce on object we can
understand the color & Texture
 The color an object appears depends on the
colors of light it reflects.

16. Rods and Cones in the Retina:
red
green
blue

17. Color is the perceptual quality of light.
The human eye can distinguish almost ten million
colors.
Color of Objects:
o White light is the presence of ALL the colors of the
visible spectrum.
oBlack objects absorb ALL the colors and no light is
reflected back.

18. *Emission
*Reflection
*Transmission
*Interference
*Dispersion
*Scattering

20.  is a special kind of refraction which
provided us colors of light.