Download Review how refraction and reflection govern the behavior of light at

TODAY’S OUTCOMES:
BEHAVIOR OF LIGHT
- Review how refraction and reflection
govern the behavior of light at
boundaries
- Observe demonstrations of light and
color
- Discover how lenses of different types
interact with light and are used to
project images ; compare and contrast a
lens camera with a pinhole camera
15. Explain, what does refraction have to do with clear objects making shadows?
bright center,
darker edges
left
edge of
shadow
screen
right edge of
shadow
round water bottle
(top view)
Light incident on a round, clear water bottle passes through
it, but the light beams refract “inward” at both the surface
entering and the surface leaving the water bottle. Thus,
the light does not illuminate a surface beyond the bottle
in a uniform manner - some areas will be brighter than
others.
16. A laser beam is directed towards a prism, as shown. Three visible light beams
result:
A) light that is reflected from the front surface,
B) light that enters the prism, travels to a different surface of the prism, and leaves it;
C) light that enters the prism, travels to a different surface of the prism where it is
reflected, travels to yet another surface (perhaps the first one, again), and leaves there.
Please draw in the path taken by these three beams (labeling them A, B, C)..
A
B
C
The emerging beam (C) is parallel to the incoming
laser beam.
You can get both REFLECTION and REFRACTION
of a light beam simultaneously at a boundary:
thick piece of glass
at an angle
You can get both REFLECTION and REFRACTION
of a light beam simultaneously at a boundary:
thin piece of glass
at an angle
You can get both REFLECTION and REFRACTION
of a light beam simultaneously at a boundary:
Many of you observed that if the light refracts
at a sharp enough angle, that different colors
of light emerge, instead of a white beam.
PRISM FROM LAST LAB:
You can see with a prism that
white light, under the right
circumstances, can be divided
into different colors
WHAT YOU ARE EXPECTED TO KNOW:
- Both reflection and refraction can occur
simultaneously at the boundary between
materials
- Refraction is the greatest at smaller angles of
incidence
- Light moving from air to glass/water refracts
closer to a perpendicular line to the surface
- Light moving from glass/water to air refracts
further from a perpendicular line to the surface
TODAY’S OUTCOMES:
BEHAVIOR OF LIGHT
- Review how refraction and reflection
govern the behavior of light at
boundaries ✓
- Observe demonstrations of light and
color
- Discover how lenses of different types
interact with light and are used to
project images ; compare and contrast a
lens camera with a pinhole camera