Ground glass is glass whose surface has been ground to produce a flat but rough (matte) finish.
Ground glass surfaces have many applications, ranging from mere ornamentation on windows and table glassware to scientific uses in optics and laboratory glassware.
Famous quotes containing the words ground and/or glass:
“Some people are like ants. Give them a warm day and a piece of ground and they start digging. There the similarity ends. Ants keep on digging. Most people don’t. They establish contact with the soil, absorb so much vernal vigor that they can’t stay in one place, and desert the fork or spade to see how the rhubarb is coming and whether the asparagus is yet in sight.”
—Hal Borland (1900–1978)
“... this I conceive to be no time to prate of moral influences. Our men’s nerves require their accustomed narcotics and a glass of whiskey is a powerful friend in a sunstroke, and these poor fellows fall senseless on their heavy drills.”
—Clara Barton (1821–1912)