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:
“A woman can get marries and her life does change. And a man can get married and his life changes. But nothing changes life as dramatically as having a child. . . . In this country, it is a particular experience, a rite of passage, if you will, that is unsupported for the most part, and rather ignored. Somebody will send you a couple of presents for the baby, but people do not acknowledge the massive experience to the parents involved.”
—Dana Raphael (20th century)
“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)