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

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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