Part

 1 I  |      small resistances which the friction of the axles and teeth,
 2 II |     resistance of the air and by friction.~You see here that the reason
 3 II |     resistance of the air and of friction. Neither does it increase,
 4 II |      badly greased and where the friction is great, becomes hot -
 5 II |    sockets. A powerful degree of friction is not, indeed, necessary
 6 II |        feel the heat produced by friction, and which is far greater
 7 II |       Uncivilized people use the friction of two pieces of wood to
 8 II |       was only a question of the friction of solids, in which particles
 9 II |     would thus appear as heat of friction.~But heat can also be produced
10 II |          also be produced by the friction of liquids, in which there
11 II |         no other cause than from friction, and must have been created
12 II |        must have been created by friction.~Heat can also be produced
13 II |     elastic bodies as well as by friction. This is the case, for instance,
14 II |        the mechanical effects of friction and of inelastic impact,
15 II |         very much diminish their friction, but never completely annul
16 II | gradually lost in consequence of friction. It disappears, and if we
17 II |         velocity is destroyed by friction on the path, caused by the
18 II |          by a weight; but by the friction against the surrounding
19 II |    experience, we shall see that friction and inelastic impact are
20 III|        which is destroyed by the friction of solids and by the friction
21 III|    friction of solids and by the friction of liquids; and, on the
22 III|        which water was heated by friction in a brass vessel. In the
23 III|      heat and mechanical work in friction, as close an agreement is
24 III|  therefore, motion seems lost in friction and impact, it is not actually