Across
- 2. dioxide the chemical name for silica
- 5. paint chippings
- 7. Circular pattern of cracks
- 9. different layers of paint
- 10. Used for comparison analysis
- 12. The speed of something in a given direction
- 13. laminated and tempered glass made of two layers
- 15. In the original place
- 16. Glass containing lead oxide
- 19. Fragments of glass left on the side of an impact
- 20. without a clearly defined shape or form
Down
- 1. type of safety glass used for windshields
- 3. one refractive index as opposed to anisotropic
- 4. Analyzes the composition of trace levels of glass
- 6. Heat- or chemically treated safety glass
- 8. The most prevalent type of glass
- 11. cracks that move outward
- 14. Heat resistant glass
- 17. brittle solid madeby heating a mixture of silica and other materials
- 18. more than one refractive index