may be with the help of fine sand
The Romans used small clay or glass tile pieces to make a mosaic. (: (:
The Romans used sand for many purposes. Two of the most well-known are making the road bedding for the stone-paved roads and to make glass.
The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.
Primitive windows were just holes in a wall. Later, windows were covered with animal hide, cloth, or wood. The Romans were the first to use glass for windows. In Alexandria ca. 100 AD, cast glass windows, albeit with poor optical properties, began to appear. The Romans has stained glass objects but stained glass windows were not made until around 800AD This came from wikipedia http://en.wikipedia.org/wiki/Stained_glass#History http://en.wikipedia.org/wiki/Medieval_stained_glass
may be with the help of fine sand
The Romans used small clay or glass tile pieces to make a mosaic. (: (:
The romans , of course beacuse they were very educated and new how to make fragile things such as glass:D
The Romans used sand for many purposes. Two of the most well-known are making the road bedding for the stone-paved roads and to make glass.
Glass
Romans experimented with different shapes of clear glass lenses. This experimentation accidentally resulted in the creation of the magnifying glass.
The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.The Romans used leather to make sandals.
While the Romans did use glass extensively, there is no direct evidence to suggest they invented the magnifying glass. The earliest recorded use of a magnifying glass is attributed to the Arab scientist Alhazen in the 11th century.
First century AD Year 100
Vases made of crystal and glass date back to the romans.
The first glass mirrors were being made in the 13th century by the Romans then the development of glass mirrors began in the 14th century in Venice and Murano, Italy Esther Wallace , University of Manchester.
glass