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- Glass_code abstract "A glass code is a method of classifying glasses for optical use, such as the manufacture of lenses and prisms. There are many different types of glass with different compositions and optical properties, and a glass code is used to distinguish between them.There are several different glass classification schemes in use, most based on the catalogue systems used by glass manufacturers such as Pilkington and Schott Glass. These tend to be based on the material composition, for example BK7 is the Schott Glass classification of a common borosilicate crown glass.The international glass code is based on U.S. military standard MIL-G-174, and is a six-digit number specifying the glass according to its refractive index nd at the Fraunhofer d- (or D3-) line, and its Abbe number Vd also taken at that line.The resulting glass code is the value of nd-1 rounded to three digits, followed by Vd rounded to three digits, with all decimal points ignored. For example, BK7 has nd = 1.5168 and Vd = 64.17, giving a six-digit glass code of 517642.The following table shows some example glasses and their glass code. Note that the glass properties can vary slightly between different manufacturer types.".
- Glass_code wikiPageID "3214622".
- Glass_code wikiPageRevisionID "532077317".
- Glass_code hasPhotoCollection Glass_code.
- Glass_code subject Category:Glass_engineering_and_science.
- Glass_code subject Category:Optical_materials.
- Glass_code type Abstraction100002137.
- Glass_code type Material114580897.
- Glass_code type Matter100020827.
- Glass_code type OpticalMaterials.
- Glass_code type Part113809207.
- Glass_code type PhysicalEntity100001930.
- Glass_code type Relation100031921.
- Glass_code type Substance100019613.
- Glass_code comment "A glass code is a method of classifying glasses for optical use, such as the manufacture of lenses and prisms. There are many different types of glass with different compositions and optical properties, and a glass code is used to distinguish between them.There are several different glass classification schemes in use, most based on the catalogue systems used by glass manufacturers such as Pilkington and Schott Glass.".
- Glass_code label "Glass code".
- Glass_code sameAs m.08ztgf.
- Glass_code sameAs Q5567099.
- Glass_code sameAs Q5567099.
- Glass_code sameAs Glass_code.
- Glass_code wasDerivedFrom Glass_code?oldid=532077317.
- Glass_code isPrimaryTopicOf Glass_code.