The term massive particle refers to particles which have non-zero rest mass. They are divided in two major groups, bradyons and tachyons. The existence of massive superluminal particles is a controversial issue.
Famous quotes containing the words massive and/or particle:
“I imagine, on the benches of an assembly, the most intrepid of thinkers, a brilliant mind, one of those men who, when they ascend the tribune, feel it beneath them like the tripod of the oracle, suddenly grow in stature and become colossal, surpass by a head the massive appearances that mask reality, and see clearly the future over the high, frowning wall of the present.”
—Victor Hugo (1802–1885)
“Standing on the bare ground,—my head bathed by the blithe air, and uplifted into infinite space,—all mean egotism vanishes. I become a transparent eye-ball; I am nothing; I see all; the currents of the Universal Being circulate through me; I am part and particle of God.”
—Ralph Waldo Emerson (1803–1882)