Environmental Data Coding Specifcation        ISO IEC LogosRight Title Graphic
Home Browse Search Download Submissions FAQs Contact


Status: STD 2005/06/07
Code: 186
Symbol: rad
Quantities associated with this Unit

Quantity: angle of optical rotation
Concept definition: Angle through which plane-polarized light is rotated clockwise, as seen when facing the light source, in passing through an optically active medium.
Reference type: PR
Reference: [ISO 80000-9:2009, item 9-57.a]
Supplemental references:  

Quantity: angle (plane angle)
Concept definition: s/r, where s is the length of the included arc of a circle between two radii of the circle [ISO 80000-3:2006, item 3-1.8] and r is the radius of the circle [ISO 80000-3:2006, item 3-1.5].
1 rad = 1 m/m = 1
A complete angle (full circle) is 2π rad.
Reference type: PR
Reference: [ISO 80000-3:2006, item 3-5.a]
Supplemental references: [ISO 80000-1:2009, Table 2, "plane angle"]

Quantity: phase difference
Concept definition: φu - φi, where φu is the initial phase of the voltage [IEC 80000-6:2008, item 6-11.3] and φi is the initial phase of the electric current [IEC 80000-6:2008, item 6-1].
Reference type: PR
Reference: [IEC 80000-6:2008, item 6-48.a]
Supplemental references:  

Bottom Bar Graphic

 Send mail to webmaster with questions or comments about this web site.