8.04 Optics Exploration [Place your name here] Purpose Simple materials will be used to better understand optics,
Question:
8.04 Optics Exploration
[Place your name here]
Purpose
Simple materials will be used to better understand optics, including reflection, refraction, and total internal refraction.
Problems
This exploration will include 3 activities to investigate the following:
- How does a camera obscura invert an image?
- Why does a fishbowl or other curved, clear substances, distort images?
- What makes light stay within a stream of water and not leave to the surrounding air?
Please bold your answers after each question or type them in another color that is easy to read (such as dark red).
Part 1: Camera Obscura
Experimental
Go to the Pringles Pinhole Camera page and follow the directions there.
Observations and Discussion
- Describe or and draw what you saw when looking through your camera obscura.
- Why would you not see an upside down image of what is outside on a wall opposite of a window?
- Using what you know about light, explain why the image appeared as it did.
Part 2: Total Internal Reflection
Materials
- empty 2-L bottle
- pushpin
- tap
- water
- bucket or sink
- laser
Procedure
- Using the pushpin, poke a large hole (push the pin through the bottle 2-3 times) in side of the empty bottle about 4 inches from the bottom. Cover the hole with a piece of tape.
- Fill the bottle about half full of water.
- Set the bottle upright on a table or countertop so that when the water comes out of the hole it goes into a bucket or sink. Remove the tape covering the pinhole.
- Shine a laser through the bottle so that it exits through the hole with the stream of water.
- If you don't have the materials for this here is a video you can view: https://www.youtube.com/watch?v=hBQ8fh_Fp04
Observations and Discussion
- Describe what happened to the laser as it went through the bottle.
- Explain why this happened.
- Would we see the same results if we shined the laser from air to the stream of water? Try it and explain your results.
Part 3: Fishbowl Lens
Materials
- curved fishbowl
- newspaper
- magnifying glass
Procedure
- Place a piece of newspaper or other paper with print behind a fishbowl with water in it.
- Compare how the print looks through the air and through the fishbowl. Move the paper so it is closed to the fishbowl and further from the fish bowl. Note any changes.
Observations and Discussion
- How did the print compare when it was being viewed through the air and directly behind the fishbowl?
- What happened when you moved the print further back from the fishbowl?
- Look at a magnifying glass, which makes the print larger as did the fishbowl. Describe the shape of the magnifying glass when looking at it from the side. What kind of lens is the magnifying glass?
Part 4: Optical Illusions
Watch this video: Smarter Every Day: You Won't Believe Your Eyes . Give a short summary below of what the important points were from the video.
Science in Action : Making Turbines Bird Friendly
International Marketing And Export Management
ISBN: 9781292016924
8th Edition
Authors: Gerald Albaum , Alexander Josiassen , Edwin Duerr