Refractive index
Typical values

Refractive index

Section Title: Typical values
Table Section Text: None

Material	n

Vacuum	1

Gases at 0 °C and 1 atm

Air	1.000293

Helium	1.000036

Hydrogen	1.000132

Carbon dioxide	1.00045

Liquids at 20 °C

Water	1.333

Ethanol	1.36

Olive oil	1.47

Solids

Ice	1.31

Fused silica (quartz)	1.46

PMMA (acrylic, plexiglas, lucite, perspex)	1.49

Window glass	1.52

Polycarbonate (Lexan™)	1.58

Flint glass (typical)	1.62

Sapphire	1.77

Cubic zirconia	2.15

Diamond	2.42

Moissanite	2.65

Sentence(s)

The refractive index of water is 1.333.

final_sentence: The refractive index of water is 1.333.