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Refraction Demos O43 – O68 Created for CVCA Physics By Dick Heckathorn 1 June 2005
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Refraction Demos O43 – O68
Created for CVCA PhysicsBy
Dick Heckathorn1 June 2005
Eyeglass Lens
Examine blank lens ‘A’
Partially ground lens ‘B’
Further ground lens ‘C’
Read the informationthat came with the lens.
O-43
O-43 Eyeglass Lens
Etched Lens
Examine the lens.
What do you think made the small cracks in the lens?
Ask your instructorFor an explanation.
O-43A
O-43A Etched Lens
Eye Glass Lens
Look through various lensesat both near and far objects.
Rotate the lens.
Examine the shapeof the lens.
What do you observe?
O-44
O-44 Eye Glass Lens
Eye Examination Lenses
Look through various lenses
at both near and far objects.
Rotate, then examine the shape
of the lens.
What do you observe?
O-44A
O-44A Eye Examination Lens
Car Headlight Lens
Feel my surface.
Handle the lens carefully.
Shine a parallel beam of light from a flashlight through the lens.
What do you observe?
O-44B
O-44B Car Headlight Lens
Fish Eye Lens
How many images
can you see when you look through the lens?
Would you like to have an
eye like this?
O-45
O-45 Fish Eye Lens
Special Lenses
Look through first thered and then the blue
covered lens.
Rotate each cylinder as you look through it.
Examine the shape of the material.O-45A
O-45A Fish Eye Lens
Laser LensRemove the tiny lens
from the envelope.
Look through the lensat some white light.
Position the lens so that reflected light is seen?
Why the difference?O-45B
O-45B Laser Lens
Marble In Shot Glass
Look into the empty glass.
What do you see?
Look into the glass after pouring water into the glass.
Now, look into the glass.
What do you see?
0-45C
O-45C Marble in Shot Glass
Money Shrink
Put a penny into the bank.
What happens to the penny?
Explain what happened to the penny.
What physics properties are involved?
O-45D
O-45C Money Shrink
Fresnel Lens
Look through the lens.What do you see?
Have someone holdthe lens up to their face.
What do you see?how was the fresnel lens made?
O-46
O-46 Fresnel Lens
Multi-Fresnel Lens
LOOK AT OBJECTSTHROUGH THE MANY LENSES.
HOW MANY OBJECTSDO YOU SEE?
ARE THEY ALL THE SAME SIZE?
WHAT TYPE OF LENS IS IT?O-46A
O-46A Multiple Frsnel Lens
Fresnel Mirror
LOOK INTO THE MIRROR AS YOU
MOVE IT TOWARDS AND AWAY
FROM YOUR FACE.
WHAT TYPE OF LENS IS IT?
EXPLAIN WHAT IS GOING ON.
O-46B
O-46B Fresnel Mirror
Eye Scope
HOLD IT VERY CLOSE TO YOUREYE WITH THE LIGHT TURNED ON.
LOOK INTO THE LIGHT.
WHAT DO YOU SEE?
PLEASE TURN OFF LIGHT WHEN FINISHED.
O-47
O-47 Eye Scope
Film Can With Holes
USE THE GOLF TEETO HOLD THE FILM CAN.
LOOK THROUGH THEEND FIRST WITH 1 HOLE AND THEN
THE END WITH 3 HOLES.
WHAT IS THE ORIENTATION OF THE THREE OPENINGS IN EACH CASE?
O-48
O-48 Film Can with Holes
Film Can With Pin
LOOK AT THE PIN THROUGH THE SINGLE OPENING.
LOOK AT THE PIN THROUGH THE OTHER END WITH THE PIN CLOSE TO YOUR EYE AND SEEN IN THE
SMALL OPENING.
WHAT IS THE ORIENTATION OFTHE PINS IN EACH CASE?
O-48A
O-48A Film Can with Pin
Pocket Watch Hologram
LOOK AT THE WATCH FROM VARIOUS LOCATIONS.
WHAT DO YOU SEE?
WHAT TIME IS IT?
HOW IS A HOLGRAM MADE?0-57
O-57 Pocket Watch Hologram
Cable Car Hologram
LOOK AT THE CABLE CAR
FROM VARIOUS LOCATIONS.
WHAT DO YOU SEE?
HOW ARE HOLOGRAMS MADE?
O-57A
O-57A Cable Car Hologram
Tiger Hologram
LOOK AT THE TIGER
FROM VARIOUS LOCATIONS.
WHAT DO YOU SEE?
HOW ARE HOLOGRAMS MADE?
O-57B
O-57B Tiger Hologram
Rainbow Glasses
LOOK THROUGH THE GLASSESAT BOTH FLUORESCENT
AND INCANDESCENT LIGHT.
SHINE A LASER BEAMTHROUGH ONE OF THE LENS TOWARDS THE CHALKBOARD.
WHAT DO YOU SEE?
O-62
O-62 Rainbow Glasses
Rainbow Disk
SPIN ME UNDER BOTHFLUORESCENT
ANDINCANDESCENT LIGHT.
HOW DO I MAKETHE PRETTY PATTERNS?
0-62A
O-62A Rainbow Disk
Iridescent Cards
LOOK AT THE CARDSFROM VARIOUS LOCATIONS.
WHAT DO YOU SEE?
HOW ARE THE CARDS MADE?
READ THE INFORMATIONON THE BACK.
O-62B
O-62B Iridescent Cards
Dimension Disk
SPIN ME UNDER FLUORESCENT
AND INCANDESCNET LIGHT.
WHAT DO YOU SEE?
HOW DO I WORK?
O-68
O-68 Dimension Disk
That’s all folks!
