Because glass is made from different materials and sand is a grain and is not able to look through.
sand makes glass and glass make sand its a reverse psychology :)
Our everyday glass is made of silica, a sand composed of silicon dioxide, silicon and oxygen.
The most familiar type of glass, used for centuries in windows and glass cups, is soda-lime glass. The materials include 75% silica (SiO2) plus Na2O, CaO, and several minor additives.
It means that the information that you have been given is so accurate as to be unable to be mistaken or misunderstood. So therefore that information is clear. Glass is also clear and objects on the other side of that glass cannot be mistaken. So the play on the word clear is used to say that, It's as clear as glass!
Usually glass.
you get glass from sand and they compact it then use special chemicals to make it clear
Glass is made out of sand Glass is made of sand.
Sand and Glass
yes glass is made out of sand
Yes sand can turn into glass
Beach sand or glass that is crushed like sand.
glass is made from sand
Most glass is currently made of silica (sand), lime, and soda ash. These have natural impurities for instance iron oxide, this causes a greenish glass. Glassmakers have been adding chemicals to glass since circa Roman times in an attempt to make clear glass, but it in the 15th century that they were able to develop a reasonably dependable formula. In or around the late 1400s, glassmakers in Venice in Italy developed a perfectly clear type of glass they called cristallo. They used quartz sand and potash to make the glass. This glass was prized possession because it was so clear. Today we take its clearity for granted
To make a moving sand picture, you need to place sand between two sheets of glass or clear plastic, with a small amount of space between the panes, and then seal the edges completely. You can dye the sand, if you wish.
sand makes glass and glass make sand its a reverse psychology :)
You get sand, then you smelt the sand into glass. Simple as that.
fire and sand