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

EU:  WATT

Status: STD 2005/06/07
Code: 227
Symbol: W
EQ label: POWER
 
Quantities associated with this Unit
Quantity: power
Concept definition: For a particle, F ·v, where F is force [ISO 80000-4:2006, item 4-9.1] and v is velocity [ISO 80000-3:2006, item 3-8.1].
1 W = 1 J/s = 1 (m2 · kg)/s3.
 
Reference type: PR
Reference: [ISO 80000-4:2006, item 4-26.a]
Supplemental references: [ISO 80000-1:2009, Table 2, "power"]
Quantity: heat flow rate
Concept definition: The rate at which heat [ISO 80000-5:2007, item 5-6] crosses a given surface.
 
Reference type: PR
Reference: [ISO 80000-5:2007, item 5-7.a]
Supplemental references:  
Quantity: radiant flux (radiant power)
Concept definition: dQ/dt, where dQ is the radiant energy [ISO 80000-7:2008, item 7-6] emitted, transferred, or received during a time interval of the duration dt [ISO 80000-3:2006, item 3-7].
 
Reference type: PR
Reference: [ISO 80000-7:2008, item 7-13.a]
Supplemental references:  
Quantity: sound power
Concept definition: Through a surface, product of the sound pressure, p [ISO 80000-8:2007, item 8-9.2], and the component of the particle velocity, un [ISO 80000-8:2007, item 8-11], at a point on the surface in the direction normal to the surface, integrated over that surface [ISO 80000-8:2007, item 8-16.2].
 
Reference type: PR
Reference: [ISO 80000-8:2007, item 8-16.a]
Supplemental references:  
Quantity: power (instantaneous power)
Concept definition: u/i, where u is instantaneous voltage [IEC 80000-6:2008, item 6-11.3] and i is instantaneous electric current [IEC 80000-6:2008, item 6-1].
1 W = 1 J/s = 1 (m2 · kg)/s3.
 
Reference type: PR
Reference: [IEC 80000-6:2008, item 6-45.a]
Supplemental references: [ISO 80000-1:2009, Table 2, "power"]

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