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and two “male,” each suspended from above. Their mobility consisted prin-
cipally in their ability to rotate on their axes, driven by electric motors. The
males each had two “drives,” designated
O
and
P
, which built up over time (as
charges on a capacitor) and were indicated by the intensity of either an orange
or a puce light on the robot. These lights were reminiscent of the tortoises'
Figure 7.18.
Plan of the colloquy of mobiles.
Top,
horizontal plan;
bottom,
verti-
cal section taken through line
L
in horizontal plan;
A,
drive state display for
male;
B,
main body of male, bearing “energetic” light projectors
o
and
P; C,
upper
“energetic” receptors;
D,
lower “energetic” receptors;
U,
non-“energetic,” inter-
mittent signal lamp;
a,
female receptor for intermittent positional signal;
b,
vertically movable reflector of female
Z,
bar linkage
bea
ring male i and male ii;
, drive motor; ,free coupling; , fixed coupling; , bar linkage. source: g.
Pask, “a comment, a case history and a Plan,” in J. reichardt (ed.),
Cybernetics,
Art, and Ideas
(greenwich, ct: New york graphics society, 1971), 90, fig. 34.