Changes

==Etymology==

==Etymology==

[[Latin]] translucent-, translucens, present participle of translucēre to shine through, from trans-  + lucēre to shine — more at [[light]]

[[Latin]] translucent-, translucens, present participle of translucēre to shine through, from trans-  + lucēre to shine — more at [[light]]

*Date: [http://www.wikipedia.org/wiki/17th_Century 1607]

*Date: [https://www.wikipedia.org/wiki/17th_Century 1607]

==Definitions==

==Definitions==

*1 : permitting the passage of [[light]]: a : clear, [[transparent]] <translucent water>  

*1 : permitting the passage of [[light]]: a : clear, [[transparent]] <translucent water>  

Some [[materials]], such as plate glass and clean water, allow much of the [[light]] that falls on them to be transmitted, with little being [[reflected]]; 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.

Some [[materials]], such as plate glass and clean water, allow much of the [[light]] that falls on them to be transmitted, with little being [[reflected]]; 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.

[[Materials]] which do not allow the [[transmission]] of [[light]] are called [[opaque]]. Many such substances have a [[chemical]] composition which includes what are referred to as absorption [[centers]]. Many substances are selective in their absorption of white [[light]] frequencies. They absorb certain portions of the visible [[spectrum]], while reflecting others. The frequencies of the spectrum which are not absorbed are either reflected back or transmitted for our [[physical]] [[observation]]. This is what gives rise to [[color]]. The attenuation of [[light]] of all frequencies and wavelengths is due to the combined [[mechanisms]] of absorption and [http://en.wikipedia.org/wiki/Light_scattering_in_liquids_and_solids scattering].[http://en.wikipedia.org/wiki/Translucent]

[[Materials]] which do not allow the [[transmission]] of [[light]] are called [[opaque]]. Many such substances have a [[chemical]] composition which includes what are referred to as absorption [[centers]]. Many substances are selective in their absorption of white [[light]] frequencies. They absorb certain portions of the visible [[spectrum]], while reflecting others. The frequencies of the spectrum which are not absorbed are either reflected back or transmitted for our [[physical]] [[observation]]. This is what gives rise to [[color]]. The attenuation of [[light]] of all frequencies and wavelengths is due to the combined [[mechanisms]] of absorption and [https://en.wikipedia.org/wiki/Light_scattering_in_liquids_and_solids scattering].[https://en.wikipedia.org/wiki/Translucent]

[[Category: Physics]]

[[Category: Physics]]