luxon
tardyon
tachyon
monophotonic
photon
luminal
nonphotonic
Planck momentum
gyraton
impenetrable
heavy
photonically
dense
soft photon
infraparticle
subrelativistic
Einstein barrier
lightproof
sub-light
light-tight
relativistic
Landau-Lifshitz pseudotensor
Cerenkov effect
photophysics
scintillation
Bethe formula
Higgs boson
Schwarzschild radius
notoph
warm dark matter
monophoton
einstein
photomeson
antiphoton
ultracold
SOL
faster-than-light
thermochromy
downconversion
nonrelativistic
lightlessness
opaque
soliton
solitary wave
soliton wave
black
emission theory
nonrelativistic mechanics
pitch blackness
total darkness
baryonic dark matter
dry light
de Broglie wavelength
blackness
Planck speed
superbradyon
lumic
second-harmonic generation
uncharged
instantaneous velocity
darkly
scalar
upconversion
in darkness
postnoun
graviphoton
time of flight
lightlessly
weightless
speed of light
rapidity
supersinglet
photoenergy
monowavelength
c
optical opacity
photoeffect
Planck time
light speed
special relativity
electromagnetic interaction
cold dark matter
photoexcitable
gravitational radiation
relativistic mechanics
excited state
slight
little
scintillator
photoluminescence
effective energy
superpartner
Lorentz factor
tunneling
extraspectral
Planck energy