Chemistry Reference
In-Depth Information
Fig. 7 Examples of mechanical bonds in society: (a) decorative mechanical bonds of a Mursi
woman, (b) portrait of a Khayan Lahwi woman, (c) shower curtain, (d) wristwatch makes a
rotaxane with the hand and body as stoppers, (e) chain link, (f) abacus, (g) children's bead maze,
(h) keychain, (i) lock, (j) pulley on a sailship, (k) chainmail, (l) seatbelt buckle, (m) doorknob has
the essence of the “dumbbell” portion of a rotaxane (the door is the ring), (n) the mechanical bond
of a carabiner helps climbers cling to rock faces, and (o) hundreds of mechanical bonds exist in the
chain, crank, and wheels of a bicycle
