Refractive index of CH4 (Methane)

Optical constants of CH₄ (Methane)
Loria 1909: Gas at 0 ℃; n 0.529–0.659 µm

Wavelength: µm

(0.529–0.6585)

Complex refractive index (n+ik)[ i ]

Derived optical constants

Dispersion formula [ i ]

$$n=1.00042607+6.1396687\text{×}10^{-6}λ^{-2}$$

Conditions & Spec sheet

n_absolute: true
temperature: 0 ℃
pressure: 101325 Pa

Comments

Standard conditions. 0 ℃, 760 torr (101.325 kPa).

References

S. Loria Über die Dispersion des Lichtes in gasförmigen Kohlenwasserstoffen. Annalen der Physik 334, 605-622 (1909) (in German).

Data

[Expressions for n] [CSV - comma separated] [TXT - tab separated] [Full database record]

Optical transmission calculator

Wavelength: µm
Thickness:
Calculation method:

Transmittance[ i ]

T =

LogX LogY eV

Reflection calculator

Wavelength: µm
Angle of incidence (0~90°):
Direction: in out

Reflectance[ i ]

P-polarized

R_P =

S-polarized

R_S =

Non-polarized (Rp+Rs)/2

R =

R_P R_S R LogY

Reflection phase[ i ]

ɸ_P = °
ɸ_S = °

Brewster's angle[ i ]

θ_B = °

Critical angle[ i ] [ i ]

θ_C = °

INFO

Methane, CH₄

Other name

Tetrahydridocarbon

RefractiveIndex.INFO

Optical constants of CH₄ (Methane)
Loria 1909: Gas at 0 ℃; n 0.529–0.659 µm

Complex refractive index (n+ik)[ i ]

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Dispersion formula [ i ]

Conditions & Spec sheet

Comments

References

Data

Optical transmission calculator

Transmittance[ i ]

Reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

INFO

Methane, CH₄

Other name

External links

Optical constants of CH4 (Methane)Loria 1909: Gas at 0 ℃; n 0.529–0.659 µm

Complex refractive index (n+ik)[ i ]

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Dispersion formula [ i ]

Conditions & Spec sheet

Comments

References

Data

Optical transmission calculator

Transmittance[ i ]

Reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

INFO

Methane, CH4

Other name

External links

Optical constants of CH₄ (Methane)
Loria 1909: Gas at 0 ℃; n 0.529–0.659 µm

Methane, CH₄