(b) While driving, glare caused by reflected light off the glass windshield of other cars can be distracting. Wearing polarized sunglasses can help to reduce the glare. Ana- lyze the polarization state of the glare as shown in the graph, and comment on the requirement on the polarized sunglasses.

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### Analyzing Glare Reduction with Polarized Sunglasses

**Text:**
While driving, glare caused by reflected light off the glass windshield of other cars can be distracting. Wearing polarized sunglasses can help to reduce the glare. Analyze the polarization state of the glare as shown in the graph, and comment on the requirement on the polarized sunglasses.

**Explanation for Diagram:**
The diagram on the right side features a simple illustration of a car with arrows indicating the direction of reflected light causing glare. 

- **Car:** The car is shown from the side view.
- **Horizontal Line (Road):** The bottom part of the diagram represents the road.
- **Arrow Directions:**
  - One arrow points horizontally to the left from the windshield, indicating the direction of horizontally polarized reflected light.
  - Another arrow points downward from the top edge of the windshield, showing where the reflected light beam comes from.

**Detailed Explanation:**
In the context provided, the glare that occurs when light reflects off the glass windshield is typically horizontally polarized. Polarized sunglasses are designed to filter out horizontally polarized light, significantly reducing the glare and improving visibility for the driver.

- **Polarization State:** The arrows in the diagram highlight that the reflected light has a specific polarization direction (horizontal).
- **Requirement on Polarized Sunglasses:** 
  - To effectively reduce glare, the lenses of polarized sunglasses must have a vertical polarization filter. This means that they block horizontally polarized light while allowing vertically polarized light to pass through.
  
Understanding this principle helps in choosing the right sunglasses to enhance driving safety, reducing the glare’s impact on the driver’s vision.
Transcribed Image Text:### Analyzing Glare Reduction with Polarized Sunglasses **Text:** While driving, glare caused by reflected light off the glass windshield of other cars can be distracting. Wearing polarized sunglasses can help to reduce the glare. Analyze the polarization state of the glare as shown in the graph, and comment on the requirement on the polarized sunglasses. **Explanation for Diagram:** The diagram on the right side features a simple illustration of a car with arrows indicating the direction of reflected light causing glare. - **Car:** The car is shown from the side view. - **Horizontal Line (Road):** The bottom part of the diagram represents the road. - **Arrow Directions:** - One arrow points horizontally to the left from the windshield, indicating the direction of horizontally polarized reflected light. - Another arrow points downward from the top edge of the windshield, showing where the reflected light beam comes from. **Detailed Explanation:** In the context provided, the glare that occurs when light reflects off the glass windshield is typically horizontally polarized. Polarized sunglasses are designed to filter out horizontally polarized light, significantly reducing the glare and improving visibility for the driver. - **Polarization State:** The arrows in the diagram highlight that the reflected light has a specific polarization direction (horizontal). - **Requirement on Polarized Sunglasses:** - To effectively reduce glare, the lenses of polarized sunglasses must have a vertical polarization filter. This means that they block horizontally polarized light while allowing vertically polarized light to pass through. Understanding this principle helps in choosing the right sunglasses to enhance driving safety, reducing the glare’s impact on the driver’s vision.
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