dichroism
Two colors, one crystal
Dichroism is the property of certain crystals or materials that absorb light differently depending on the direction it passes through, causing the material to appear as two different colors when viewed from different angles.
The phenomenon occurs because polarized light interacts differently with the material's structure along different axes.
A dichroic filter transmits some wavelengths while reflecting others, producing color-shifting effects in jewelry, glass art, and optical equipment.
Boron silicate gemstone family
- alexandriteColor-changing precious stone
- tanzaniteBlue zoisite variety
- cordieriteBlue magnesium-iron aluminosilicate mineral
- kunzitePink-violet lithium silicate mineral
sapphire · faceting · lapidary · gemologist · refractometer · pavilion · table · crown
Along two perpendicular lines
- anisotropyDirection-dependent property variation
- crystal structureOrdered atomic arrangement in solids
- extinctionComplete vanishing of a species
- symmetryInvariance under transformation
Process of taking in
- transmittanceFraction not absorbed
- wavelengthSpatial repetition interval
- spectrumContinuous range of values
- chromophoreMolecule's tint-causing portion
spectrophotometer · absorbance · Beer-Lambert law · bandwidth · baseline · peak
Devices that slow motion
- polariscopeInstrument detecting optical stress
- analyzerTool for systematic examination
- depolarizationLoss of electrical gradient
- polarizing filterOptical device blocking oriented light
Direction of observation
- color contrastDifference between adjacent hues
- polychromaticHaving many colors
tourmaline
Boron silicate gemstone family
- alexandriteColor-changing precious stone
- tanzaniteBlue zoisite variety
- cordieriteBlue magnesium-iron aluminosilicate mineral
kunzite · sapphire · faceting · lapidary · gemologist · refractometer · pavilion · table · crown
biaxial
Along two perpendicular lines
- anisotropyDirection-dependent property variation
- crystal structureOrdered atomic arrangement in solids
- extinctionComplete vanishing of a species
absorption
Process of taking in
- transmittanceFraction not absorbed
- wavelengthSpatial repetition interval
- spectrumContinuous range of values
chromophore · spectrophotometer · absorbance · Beer-Lambert law · bandwidth · baseline · peak
retarders
Devices that slow motion
- polariscopeInstrument detecting optical stress
- analyzerTool for systematic examination
- depolarizationLoss of electrical gradient
viewing angle
Direction of observation
- color contrastDifference between adjacent hues
- polychromaticHaving many colors