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:
“Euclid alone
Has looked on Beauty bare. Fortunate they
Who, though once only and then but far away,
Have heard her massive sandal set on stone.”
—Edna St. Vincent Millay (1892–1950)
“You don’t hold any mystery for me, darling, do you mind? There isn’t a particle of you that I don’t know, remember, and want.”
—Noël Coward (1899–1973)