propttle="Glass"
var propnum=7
propnme = new Array(7)
propval = new Array(7)
propunt = new Array(7)
propnme[1]="Density"
propval[1]="2600 to 4200"
propunt[1]="kgm<sup>-3</sup>"
propnme[2]="Melting Point "
propval[2]="1400 to 1500"
propunt[2]="K"
propnme[3]="Youngs modulus"
propval[3]="80000000000"
propunt[3]="Nm<sup>-2</sup>"
propnme[4]="Linear expansivity"
propval[4]="0.000008"
propunt[4]="K<sup>-1</sup>"
propnme[5]="Specific heat capacity"
propval[5]="flint 500 crown 670 pyrex 753"
propunt[5]="Jkg<sup>-1</sup>K<sup>-1</sup>"
propnme[6]="Thermal conductivity "
propval[6]="0.04 to 0.8"
propunt[6]="Wm<sup>-1</sup>K<sup>-1</sup>"
propnme[7]="Dielectric constant"
propval[7]="5"
propunt[7]=""