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Glass Crossword

ELIZABETH COCKERHAM
4TH PERIOD
Across
Glass which is strengthened by introducing stress by rapid heating.
The most common glass, inexpensive, and easy to shape/melt.
The ratio of mass of an object to its volume. Expressed by the equation, density =mass/volume.
An apparatus for measuring the intensity of light in a part of the spectrum.
Volcanic glass
The change in direction of light as it changes speed when moving from one substance into another.
A process in which gases expand or travel in a direction opposite of the usual one.
The property of being directionally dependent, which implies different properties in different directions.
Optical property of a material having a refractive index that depends on the polarization and propagation direction of light.
Without shape or form; having particles that are arranged randomly instead of in a definite pattern.
Down
Glass containing leadoxide
The chemical name for silica.
Two sheets of ordinary glass bonded together with a plastic film.
A hard, amorphous, transparent material made by heating sand and other additives.
The line created as refracted light becomes concentrated around he edges of a glass fragment.
An object having a physical property that has the same value when measured in different directions.
A line drawn perpendicular to the interface surface of two different media.
An optical filter that lets light waves of a specific polarization pass, and blocks light waves of other polarizations.