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)
“Experience is never limited, and it is never complete; it is an immense sensibility, a kind of huge spider-web of the finest silken threads suspended in the chamber of consciousness, and catching every air-borne particle in its tissue.”
—Henry James (1843–1916)