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1. Absolute Magnitude of a Star - with distance modulus
Mabsolute magnitude of an object (dimensionless)
mapparent magnitude of an object (dimensionless)
μdistance modulus (dimensionless)
Variables...
  valueunitslink
M
m
μ
2. Absolute Magnitude of a Star - with luminosity distance
Mabsolute magnitude of an object (dimensionless)
mapparent magnitude of an object (dimensionless)
DLstar's luminosity distance(parsec) (dimensionless)
Variables...
  valueunitslink
M
m
DL
3. Absolute Magnitude of a Star - with parallax
Mabsolute magnitude of an object (dimensionless)
mapparent magnitude of an object (dimensionless)
pstar's parallax(arcsec) (dimensionless)
Variables...
  valueunitslink
M
m
p
5. Knudsen number ( related to mean free path)
KnThe Knudsen number (dimensionless)
λThe molecular mean free path length (m)
LThe representative physical length scale (m)
Variables...
  valueunitslink
Kn
λ
L
6. Knudsen number (For a Boltzmann gas)
KnKnudsen number (dimensionless)
kBBoltzmann constant
TThe thermodynamic temperature (K)
πpi
dThe particle hard shell diameter (m)
PThe total pressure, (Pa)
LThe representative physical length scale (m)
Variables...
  valueunitslink
Kn
T
d
P
L
7. Knudsen number (Relationship to Mach and Reynolds numbers in gases)
KnKnudsen number (dimensionless)
MaMach number (dimensionless)
ReReynolds number (dimensionless)
γThe ratio of specific heats (dimensionless)
πpi
Variables...
  valueunitslink
Kn
Ma
Re
γ
8. Knudsen diffusivity for diffusing species
DKAThe Knudsen diffusivity for diffusing species A (m2/s)
dporeThe pore diameter (m)
Rgmolar gas constant
TThe absolute temperature (K)
πpi
MAThe species molecular weigh (kg/mol)
Variables...
  valueunitslink
DKA
dpore
T
MA

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