index of refraction
refractive index
lightspeed
c
speed of light
light speed
rapidity
light minute
SOL
light hour
high vacuum
luminous flux
luminal
subluminally
light second
kilolight
special theory of relativity
special relativity theory
Einstein's special theory of relativity
special relativity
acceleration
subvelocity
deceleration
in vacuo
flicker
Mach number
sub-light
delta-v
nonvacuum
rest energy
instantaneous velocity
microturbulence
relativistic
Planck acceleration
Planck momentum
faster-than-light
acoustooptics
intervacuum
subrelativistic
candela
standard candle
cd
twink
candle
nonrelativistic mechanics
translucent
light-year
semitransparent
light year
Sears-Haack body