Cell - Same as object case.
Dichroic - Glass treated with metal oxides, showing different colors depending on the angle of light falling on it.
Dihedral - Two-mirror
First-surface mirror - Same as front-surface mirror. The most common type of mirror used to make kaleidoscopes.
Flamework - See Lampworking
Front-surface mirror - Reflecting metal is on the front surface of the glass, rather than behind the rear surface as in a conventional mirror.
Fused glass - Colored pieces of glass joined together by heating in a kiln.
Lampworking - A process using a specially designed torch or lamp to heat glass rods for sculpting, blowing, or beadmaking.
L.E.D. - Light-emitting diode.
Lens - A piece of glass or other transparent substance with two opposing curved surfaces, or one plane surface and one curved surface.
Mandala - A circular design containing concentric geometric forms; the term for a kaleidoscope's interior image.
Millefiore - Cross-section slices of multicolored glass in floral or other designs.
Object case - Container at end of scope holding objects to be viewed.
Object chamber - Same as object case.
Oil-suspension - Bits and pieces floating in an oil-filled object case.
Optically treated mirror - Chemically coated to prevent discoloration.
Polarized light - Light that vibrates in one plane only (in contrast to ordinary light, which vibrates in all directions).
Puck - Same as object case.
Slumped glass - Flat glass placed over a mold and heated until it bends.
Teleidoscope - See Types of Scopes
Three-mirror system - See Mirror Systems
Two-mirror system - See Mirror Systems