For example, a directed line segment that is free to slide along a given line is called a " fixed rhabdor " and corresponds to a " sliding vector " in standard nomenclature.
12.
A 2010 translation by Aaron Poochigian included for the first time the detailed notes for choral odes that Aeschylus himself created, which directed lines to be spoken by specific parts of the chorus ( strophe and antistrophe ).
13.
In 2003 Sandro Caparrini challenged Crowe s conclusions by noting that " geometrical representations of forces and velocities by means of directed line segments . . . was already fairly well known by the middle of the eighteenth century " in his essay " Early Theories of Vectors ".
