One of the mysteries of the English language finally explained.
Glass made without lead or iron, originally in a circular sheet. Formerly used in windows, it is now used as optical glass of low refractive index.
- ‘The material's color approaches the water-white clarity of crown glass.’
- ‘Progress in the production of window glass from the hand craft of blowing crown glass to large sheets of drawn glass in 1915 had a very noticeable effect on the appearance of buildings.’
- ‘The ‘Barlow lens ‘, a modification of this telescope lens, is a negative achromatic combination of flint glass and crown glass.’’
- ‘The other kind - called crown glass - was made by pouring molten glass out on a turntable and letting centrifigal forces spread it out from a central point.’
- ‘Several panes of crown glass may be cut out of each disc.’
- ‘It retains many of its original Georgian features including sash windows, crown glass, ornate ceiling cornicing, dado rails and picture rails.’
- ‘The discovery of achromatic lenses made of flint and crown glass heralded a new era for telescope makers, but the same did not apply to the microscope.’
- ‘Based of the research, crown glass has a refractive index in the range of 1.5 to 1.6.’
- ‘Note that the magnifying power of the crown glass is twice that of the flint in this combination, yielding a net power about half that of the crown element alone.’
- ‘The two most common kinds of glass used for making achromats are crown glass and flint glass.’
Top tips for CV writingRead more
In this article we explore how to impress employers with a spot-on CV.