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State one use of a Polaroid....

State one use of a Polaroid.

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**Step-by-Step Solution:** 1. **Definition of Polaroid**: A Polaroid is a special type of material that can polarize light. It consists of thin sheets that selectively absorb certain orientations of light waves. 2. **Understanding Polarization**: Natural light is unpolarized, meaning it contains waves vibrating in all directions. When this light passes through a Polaroid, it only allows the light waves that are parallel to its orientation to pass through, effectively filtering the light. 3. **Identifying Uses of Polaroid**: Polaroids have several practical applications due to their ability to polarize light. One common use is in sunglasses, where they help reduce glare from surfaces like water or roads. ...
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