Sumário
- Preface
1What is Physics?
10Special Relativity
16Mirrors and Lenses
17Diffraction and Interference
23Particle Physics
- AReference Tables
- Index
Performance Task
Performance Task
18.
In this performance task, you will investigate the lens-like properties of a clear bottle.
- a water bottle or glass with a round cross-section and smooth, vertical sides
- enough water to fill the bottle
- a meter stick or tape measure
- a bright light source with a small bulb, such as a pen light
- a small bright object, such as a silver spoon.
Instructions
Procedure
- Look through a clear glass or plastic bottle and describe what you see.
- Next, fill the bottle with water and describe what you see.
- Use the water bottle as a lens to produce the image of a bright object.
- Estimate the focal length of the water bottle lens.
- How can you find the focal length of the lens using the light and a blank wall?
- How can you find the focal length of the lens using the bright object?
- Why did the water change the lens properties of the bottle?