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