Materials
High quality wine glasses are often made of lead crystal. Lead crystal glasses' advantages are not only primarily aesthetic. One factor of lead crystal is it is generally considered to have a higher index of refraction, thus changing the angle of the light passing through the material. Lead crystal is also rougher than glass on a microscopic level, allowing wine in the glass to breathe more efficiently when swirled in the bowl. They are also heavier. Using lead in the crystal matrix also offers several advantages in the material's workability during production. Wine glasses are generally not coloured or frosted as this would impede the appreciation of its colour. An exception to this rule is the hock glass.
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Famous quotes containing the word materials:
“What is most interesting and valuable in it, however, is not the materials for the history of Pontiac, or Braddock, or the Northwest, which it furnishes; not the annals of the country, but the natural facts, or perennials, which are ever without date. When out of history the truth shall be extracted, it will have shed its dates like withered leaves.”
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“He was no specialist except in the relation of things.... He took most of his materials at second hand.... But no matter who mined the gold, the image and superscription are his.”
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