A standard window possesses a high spectral transmittance (aka transparency) rate of around 91-percent while PMMM offers 95-percent transparency. But unlike normal glass, 73-percent of that light ...

Where a normal pane would shatter completely ... tempered glass is still much stronger than regular window glass and more than strong enough to endure the bumps and rigors of the road without ...

The rays of the sun slanted yesterday through a handsome stained glass window in the Normal College and fell upon the upturned faces of about 300 "sweet girl graduates," tinging them with ...