Knowledge

Borosilicate glass and fused silica both handle heat better than ordinary glass, but they're not interchangeable. Fused silica pushes every one of borosilicate's advantages further — at a meaningfully higher price. Key Comparison Property Borosilicate Glass Fused Silica Composition SiO2 + B2O3 (+ minor oxides) 99.9%+ pure SiO2 Thermal expansion coefficient ~3.3...

If you hold two pieces of quartz glass side by side, you cannot tell them apart.Same color. Same clarity. Same chemical formula: SiO₂.But shine a 193nm deep-UV laser through one of them, and it passes straight through. Shine the same laser through the other, and it's completely absorbed before it even reaches...

If you've ever tried to get a suntan through a window, you already know the answer intuitively: ordinary glass blocks UV light. But swap that window for quartz glass, and UV passes straight through. Both materials are transparent to the eye, both are based on silicon dioxide, and both look nearly identical...