In the north transept is a memorial window to Samuel Lucas who died in 1853, designed and installed by the St Helens Crown Glass Company which later became Pilkington.
32.
A biconcave lens made of flint glass with an index of 1.7 is measured with a lens clock calibrated for crown glass with an index of 1.523.
33.
The leaded-glass, quarrel-paned casement windows widely used in Virginia House also salvage authentic crown glass dating from the sixteenth to the nineteenth century from the English priory.
34.
"' Barium oxide "', BaO, is a white hygroscopic non-flammable cubic structure and is used in cathode ray tubes, crown glass, and catalysts.
35.
Other methods for making hand-blown glass included blown plate glass, crown glass ( introduced to England in the 17th century ), polished plate glass and cylinder blown sheet glass.
36.
Johann Andreas Schmeller ridiculed the myths of the Erdhenne in his " Bayerisches W�rterbuch ", claiming that reports about it were created by misinterpreting moonlight shining through crown glass windows.
37.
In 1765 Peter Dollond ( son of John Dollond ) introduced the triple objective, which consisted of a combination of two convex lenses of crown glass with a concave flint lens between them.
38.
The development of diaper latticed windows was in part because three regular diamond-shaped panes could be conveniently cut from a piece of Crown glass, with minimum waste and with minimum distortion.
39.
Also producing three-mold glass in New England was the Boston Crown Glass Manufactory, as well as the Quincy Glass Works in Massachusetts, which made snuff bottles molded to a square form.
40.
At the high performance end of their range, Orion has a series of two element apochromatic ( apo ) refractors manufactured by Synta featuring " extra low crown glass in one element of the objective lens.
