<P> When light encounters a material , it can interact with it in several different ways . These interactions depend on the wavelength of the light and the nature of the material . Photons interact with an object by some combination of reflection , absorption and transmission . Some materials , such as plate glass and clean water , transmit much of the light that falls on them and reflect little of it ; such materials are called optically transparent . Many liquids and aqueous solutions are highly transparent . Absence of structural defects ( voids , cracks , etc . ) and molecular structure of most liquids are mostly responsible for excellent optical transmission . </P>
<P> When light encounters a material , it can interact with it in several different ways . These interactions depend on the wavelength of the light and the nature of the material . Photons interact with an object by some combination of reflection , absorption and transmission . Some materials , such as plate glass and clean water , transmit much of the light that falls on them and reflect little of it ; such materials are called optically transparent . Many liquids and aqueous solutions are highly transparent . Absence of structural defects ( voids , cracks , etc . ) and molecular structure of most liquids are mostly responsible for excellent optical transmission . </P>
materials that clearly transmit visible light are said to be
materials that clearly transmit visible light are said to be
optically transparent
optically transparent