User:LinguisticDemographer/Draft

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List of hundreds of England and Wales

List of Welsh towns twinned with a Breton town

List of places in Pembrokeshire (categorised)

Coordinates: 48°27′2″N, 4°14′55″W Region:see ISO 3166-1 alpha-2 Type:city(pop), city, airport, mountain, isle, waterbody, landmark, forest


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(Welsh: Abertawe, "mouth of the Tawe")

Dyfed
Cantref Cwmwd Red Book "Kymwt" Note
Cemais Cwmwd Is Nyfer Is Neuer
Cwmwd Uwch Nyfer Uwch Neuer



This is the Carman equation:

S=\cfrac{7d}{\rho\,(1-\epsilon\,)}\sqrt{\dfrac{\epsilon\,^3\pi\,\delta\,P}{l\eta\,Q}}

where:

  • S is specific surface, m2·kg-1
  • d is the cylinder diameter, m
  • ρ is the sample particle density, kg·m-3
  • ε is the volume porosity of the bed (dimensionless)
  • δP is the pressure drop across the bed, Pa
  • l is the cylinder length, m
  • η is the dynamic viscosity, Pa·s
  • Q is the flowrate, m3·s-1