Exam-style question
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What is a practical application of polarisation in technology?.
- A.Increased sound quality in speakers
- B.Reduction of glare in sunglasses
- C.Improved battery life in devices
- D.Enhanced color in television displays
Model answer
What a good answer should say
- Reduction of glare in sunglasses
Explanation
Why this works
The cause of using polarisation in sunglasses is to reduce glare from reflective surfaces. This mechanism involves the use of polarising filters that block certain orientations of light waves, leading to the effect of reduced glare.
The consequence is that wearers experience clearer vision and less eye strain in bright conditions.
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