Types of Glass

Optical Glass

Optical glasses will be found in scientific instruments, microscopes, fighter aircraft and most commonly in spectacles.

The most important properties are the refractive index and the dispersion:

  • Refractive index is a measure of how much the glass bends light.
  • Dispersion is a measure of the way the glass splits white light into the colours of the rainbow.

Glass makers use the variations in these characteristics to develop optical glasses.

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About Glass



 
 

The oldest examples of glass are Egyptian beads dating from 12,000 BC.


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