| Status: |
STD 2005/06/07 |
| Code: |
82 |
| Symbol: |
1/s |
| EQ label: |
RATE |
| |
| Quantities associated with this Unit |
|---|
|
| Quantity: |
rotational frequency
|
| Concept definition: |
dN/dt, where N is rotation [ISO 80000-3:2006, item 3-14] and t is time [ISO 80000-3:2006, item 3-7]. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-3:2006, item 3-15.b and item 3-15.2] |
| Supplemental references: |
|
|
| Quantity: |
angular frequency
|
| Concept definition: |
2π f, where f is frequency [ISO 80000-3:2006, item 3-15.1]. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-3:2006, item 3-16.b] |
| Supplemental references: |
[ISO 80000-8:2007, item 8-4.b] |
|
| Quantity: |
damping coefficient
|
| Concept definition: |
1/τ, where τ is the time constant of an exponentially varying quantity [ISO 80000-3:2006, item 3-13]. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-3:2006, item 3-23.a] |
| Supplemental references: |
|
|
| Quantity: |
nuclear precession angular frequency
|
| Concept definition: |
γB, where γ is the gyromagnetic coefficient [ISO 80000-10:2009, item 10-13.2] and B is magnetic flux density [IEC 80000-6:2008, item 6-21]. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-16.b and item 10-16.2] |
| Supplemental references: |
|
|
| Quantity: |
photon flux
|
| Concept definition: |
Quotient of the number dNp of photons [ISO 80000-7:2008, item 7-49] emitted, transmitted, or received in a time interval, by its duration dt [ISO 80000-3:2006, item 3-7], thus dNp/dt. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-7:2008, item 7-50.a] |
| Supplemental references: |
|
|
| Quantity: |
decay constant (disintegration constant)
|
| Concept definition: |
The relative variation dN/N of the number N of atoms or nuclei in a system, due to spontaneous emission from these atoms or nuclei during an infinitesimal time interval, divided by its duration dt [ISO 80000-3:2006, item 3-7]. This is equal to (-1/N)*(dN/dt). |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-26.a] |
| Supplemental references: |
|
|
| Quantity: |
Larmor angular frequency
|
| Concept definition: |
(e/2me) B, where e is the elementary charge [ISO 80000-10:2009, item 10-5.1], me is the rest mass of electron [ISO 80000-10:2009, item 10-2] and B is magnetic flux density [IEC 80000-6:2008, item 6-21]. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-16.b and item 10-16.1] |
| Supplemental references: |
|
|
| Quantity: |
Debye angular frequency
|
| Concept definition: |
The cut-off angular frequency [ISO 80000-3:2006, item 3-16] in the Debye model of the vibrational spectrum of a solid. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-12:2009, item 12-11.b] |
| Supplemental references: |
|
|
| Quantity: |
cyclotron angular frequency
|
| Concept definition: |
(|q|/m) B, where q is electric charge [IEC 80000-6:2008, item 6-2] of the particle, m is its mass [ISO 80000-4:2006, item 4-1], and B is magnetic flux density [IEC 80000-6:2008, item 6-21]. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-17.b] |
| Supplemental references: |
|
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