Pleochroism - Revision history

BrianMcMahon: Tidied translations.

2017-11-17T09:50:25Z

Tidied translations.

BrianMcMahon: Style edits to align with printed edition

2017-05-20T09:42:14Z

Style edits to align with printed edition

BrianMcMahon: Style edits to align with printed edition

2017-05-16T12:58:33Z

Style edits to align with printed edition

MassimoNespolo: Created page with "Pléochroïsme (Fr); Pleochroismus (De); Pleocroísmo (Sp);
2015-06-07T02:27:22Z

Created page with "Pléochroïsme (Fr); Pleochroismus (De); Pleocroísmo (Sp); Pléochroïsme (Fr); Pleochroismus
 (De); Pleocroísmo (Sp); Pleocroismo (It); 多色性 (Ja)

'''Pleochroism''' is the phenomenon in which a substance appears to be different colours when observed at different angles under polarized light. It founds its origin in the fact that the optical properties of anisotropic crystals vary with the direction of light. The polarization of light determines the direction of the electric field; anisotropic crystals respond differently if this angle is changed. When the absorption of light varies with the angle relative to the optical axis, then pleochroism results. The pleochroic colours are at their maximum when light is polarized parallel with a crystallographic axis.

'''Uniaxial crystal''' (tetragonal, trigonal and hexagonal) can only show two colours; pleochroism is then called '''dichroism'''.
'''Biaxial crystals''' (orthorhombic, monoclinic and triclinic) can show three colours; pleochroism is called then '''trichroism'''.

[[Category:Optical crystallography]]

← Older revision		Revision as of 09:50, 17 November 2017
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−	<font color="blue">Pléochroïsme</font> (~~<i>~~Fr~~</i>~~). <font color="red">Pleochroismus</font> (~~<i>~~Ge~~</i>~~). <font color="~~green~~">~~Pleocroísmo~~</font> (~~<i>Sp</i>~~). <font color="~~black~~">~~Pleocroismo~~</font> (~~<i>It</i>~~). <font color="~~purple~~">~~多色性~~</font> (~~<i>Ja</i>~~).	+	<font color="blue">Pléochroïsme</font> (''Fr''). <font color="red">Pleochroismus</font> (''Ge''). <font color="black">Pleocroismo</font> (''It''). <font color="purple">多色性</font> (''Ja''). <font color="green">Pleocroísmo</font> (''Sp'').

	'''Pleochroism''' is the phenomenon in which a substance appears to be different colours when observed at different angles under polarized light. It finds its origin in the fact that the optical properties of anisotropic crystals vary with the direction of light. The polarization of light determines the direction of the electric field; anisotropic crystals respond differently if this angle is changed. When the absorption of light varies with the angle relative to the optical axis, then pleochroism results. The pleochroic colours are at their maximum when light is polarized parallel to a crystallographic axis.		'''Pleochroism''' is the phenomenon in which a substance appears to be different colours when observed at different angles under polarized light. It finds its origin in the fact that the optical properties of anisotropic crystals vary with the direction of light. The polarization of light determines the direction of the electric field; anisotropic crystals respond differently if this angle is changed. When the absorption of light varies with the angle relative to the optical axis, then pleochroism results. The pleochroic colours are at their maximum when light is polarized parallel to a crystallographic axis.

@@ Line 1: / Line 1: @@
-<font color="blue">Pléochroïsme</font> (<i>Fr</i>). <font color="red">Pleochroismus
+<font color="blue">Pléochroïsme</font> (<i>Fr</i>). <font color="red">Pleochroismus</font> (<i>Ge</i>). <font color="green">Pleocroísmo</font> (<i>Sp</i>). <font color="black">Pleocroismo</font> (<i>It</i>). <font color="purple">多色性</font> (<i>Ja</i>).
 '''Pleochroism''' is the phenomenon in which a substance appears to be different colours when observed at different angles under polarized light. It finds its origin in the fact that the optical properties of anisotropic crystals vary with the direction of light. The polarization of light determines the direction of the electric field; anisotropic crystals respond differently if this angle is changed. When the absorption of light varies with the angle relative to the optical axis, then pleochroism results. The pleochroic colours are at their maximum when light is polarized parallel to a crystallographic axis.
-*'''Uniaxial crystal''' (tetragonal, trigonal and hexagonal) can only show two colours; pleochroism is then called '''dichroism'''.
+*'''Uniaxial crystals''' (tetragonal, trigonal and hexagonal) can only show two colours; pleochroism is then called '''dichroism'''.
 *'''Biaxial crystals''' (orthorhombic, monoclinic and triclinic) can show three colours; pleochroism is called then '''trichroism'''.
 [[Category:Optical crystallography]]

@@ Line 1: / Line 1: @@
-<font color="blue">Pléochroïsme</font> (<i>Fr</i>); <font color="red">Pleochroismus
+<font color="blue">Pléochroïsme</font> (<i>Fr</i>). <font color="red">Pleochroismus
-</font> (<i>De</i>); <font color="green">Pleocroísmo</font> (<i>Sp</i>); <font color="black">Pleocroismo</font> (<i>It</i>); <font color="purple">多色性</font> (<i>Ja</i>)
+</font> (<i>Ge</i>). <font color="green">Pleocroísmo</font> (<i>Sp</i>). <font color="black">Pleocroismo</font> (<i>It</i>). <font color="purple">多色性</font> (<i>Ja</i>).
+'''Pleochroism''' is the phenomenon in which a substance appears to be different colours when observed at different angles under polarized light. It finds its origin in the fact that the optical properties of anisotropic crystals vary with the direction of light. The polarization of light determines the direction of the electric field; anisotropic crystals respond differently if this angle is changed. When the absorption of light varies with the angle relative to the optical axis, then pleochroism results. The pleochroic colours are at their maximum when light is polarized parallel to a crystallographic axis.
 *'''Uniaxial crystal''' (tetragonal, trigonal and hexagonal) can only show two colours; pleochroism is then called '''dichroism'''.