b) What are soft materials?
d Why we cannot see through a metal sheet?
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soft materials- Soft materials are materials that can be easily deformed by thermal stresses or thermal fluctuations at about room temperature. Soft materials include liquids, polymers, foams, gels, colloids, granular materials, as well as most soft biological materials.
we cannot see clearly through them and objects on the other side of a translucent object appear fuzzy and unclear. ... Most of the light is either reflected by the object or absorbed and converted to thermal energy. Materials such as wood, stone, and metals are opaque to visible light.
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