Physics for Information Science: Unit IV: Optical Properties of Materials
Classification of Optical Materials
Optical materials can be classified into three categories, based on their interaction with visible light, viz.
CLASSIFICATION
OF OPTICAL MATERIALS
Optical
materials can be classified into three categories, based on their interaction
with visible light, viz.
1.
Transparent materials
2.
Translucent materials
3.
Opaque materials
1. Transparent materials
Materials
that are capable of transmitting almost all light, with very little absorption
and reflection are called transparent materials. Therefore using these material
we can see the objects clearly.
Examples
Plain
glass, clear water, etc
2. Translucent materials
Materials
that allow only certain amount of light to pass through it and absorbs rest of
the light are called translucent materials. Therefore, using these materials we
can see the object diffusely (or) not clearly.
Examples
Butter
paper, plastic covers, trace paper, frosted glass, hydrogel and colloidal
materials.
Smoke,
fog and clouds can also be considered as translucent materials.
3. Opaque materials
Materials
which doesnot allow any light to pass through it and absorbs (or) reflect
almost all the light are called opaque materials. Thus, we can't see the
objects through these materials.
Examples
Metal
is the best example, other materials such as wood, brick, stone, etc are also
good examples for opaque materials.
Note: Metals
when exposed to high frequency X-rays (or) y-rays, are considered to be
transparent
Physics for Information Science: Unit IV: Optical Properties of Materials : Tag: : - Classification of Optical Materials
Physics for Information Science: Unit IV: Optical Properties of Materials
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Physics for Information Science
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