tardyon
luxon
tachyon
Planck momentum
Planck particle
nanoparticle
ultrafine particle
Higgs boson
superbradyon
maximon
Planck speed
nonrelativistic mechanics
mass defect
mass deficiency
gravitational force
supersinglet
virtual particle
Planck energy
rest energy
midrapidity
subatom
Planck velocity
cold dark matter
atomic weight
time dilation
rest mass
deceleration
mass-energy equivalence
photon
notoph
mass spectroscopy
Lorentz-Fitzgerald contraction
photophoresis
Planck acceleration
ground state
neutrino
warm dark matter
rapidity
delta-v
electron neutrino
Z-boson
planckon
Schwarzschild radius
submolecule
boson
gravitational interaction
superpartner
instantaneous velocity
quantum soup
pseudorapidity