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Light, Shadows and Reflection

Transparent, translucent and opaque object

What is the difference between the nature of the materials used to make the lenses of sunglasses and spectacles? And what is the difference between the nature of the materials used to make a carton of juice and a cold drink bottle?

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Therefore, we can easily classify materials into three categories according to their optical properties.

Transparent objects

Translucent objects

Opaque objects

These objects allow light to pass through them.

These objects allow light to pass through them partially.

These objects do not allow light to pass through them.

One can clearly see through transparent objects.

One can see through translucent objects but not very clearly.

One cannot see through opaque objects.

Transparent objects do not cast shadows because they do not block light.

Translucent objects cast faint shadows as they block light partially.

Opaque objects cast dark shadows as they block light completely.

Curtains and Windows

One afternoon, after coming home from school, R…

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