refractive index
index of refraction
lightspeed
SOL
subluminally
speed of light
light speed
lumic
c
Mach number
rapidity
relativistic
light minute
supersonic
luminous flux
rest energy
sub-light
luminal
delta-v
information velocity
faster-than-light
light hour
Planck temperature
kilolight
spacelike
optical spectrum
high vacuum
subvelocity
subsonic
photorespirometry
Planck's constant
light intensity
sonic
airspeed
transonic
h
speedometry
true airspeed
semitransparency
translucency
translucence
subrelativistic
sublumic
kinemetry
retardation
hyperrelativistic
Mach
focus
superlumic
superluminary
light year
sunphotometry
ardency
light-year
Planck acceleration
light second
occulting light
speed parameter
Fizeau-Foucault apparatus
thermochromy
clock
speed of sound
subluminary
relative permittivity
subluminal
flickering
quick light
refractivity
light day
light time
Schwarzschild radius
relativistic mass
signal-to-noise
refractiveness
emittance
jerk
in vacuo
special relativity theory
special relativity
Einstein's special theory of relativity
airlessness
special theory of relativity
refract
relative speed
relative velocity
speeded
sensitivity
Planck momentum
reflective power
kilolightyear
albedo
diffusibility

English words for 'The ratio of the speed of light in air or vacuum to that in another medium.'

As you may have noticed, above you will find words for "The ratio of the speed of light in air or vacuum to that in another medium.". Hover the mouse over the word you'd like to know more about to view its definition. Click search related words by phrase or description. to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.

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