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   Lecture                                  grey = Comment text

 1 I     |        lamp; there is a power of heat - a power of doing something,
 2 I(4)  |          water. This power - the heat by which the water is kept
 3 I(4)  |       copper, becomes solid, the heat which retained it in a liquid
 4 I     |      blue, evolving considerable heat at the same time.] Here
 5 I     |          So great indeed is this heat in the case of lime, that
 6 I     |     consequence of this power of heat brought into play by a leakage
 7 I     |   various matters - the power of heat evolved by acting upon lime
 8 II    |         this red body, and apply heat to it (you may perhaps see
 9 II(9) |      which must be dried without heat. Biniodide of mercury is
10 II    |    another experiment that if we heat the glass in one part, it
11 III   |        as a convenient source of heat [placing the red-hot iron
12 III   |          is becoming liquid, the heat of the ball is rapidly going
13 III   |         melt all this ice by the heat contained in this ball.
14 III   |   another force, namely, that of heat; and I want you now to understand
15 III   |    understand that this force of heat is always concerned when
16 III   |        ways I can not do without heat (for we have the means of
17 III   |        making ice liquid without heat - that is to say, without
18 III   |         is to say, without using heat as a direct cause). Suppose,
19 III   |     metallic, because I want the heat which I am about to deal
20 III   |        the necessary quantity of heat from something, and in this
21 III   |       this case it will take the heat from the tray, and from
22 III   |       been forced to give up hat heat which is necessary to keep
23 III   |          which it remains solid, heat is absorbed; and if, on
24 III   |          corresponding amount of heat is given out. I have an
25 III   |     reason of its becoming solid heat is evolved, and I can make
26 III   | attraction of cohesion we absorb heat, and whenever we increase
27 III   |         increase that attraction heat is evolved. This, then,
28 III   |         fluid by the addition of heat, owing to this lessening
29 III   |         if we continued applying heat to the water (as indeed
30 III   |         a solid; but if we apply heat to it, it becomes vapor;
31 III   |       very clear that as I apply heat to the liquid diminish its
32 III   |       volume of ether below. The heat from the spirit lamp is
33 III   |        of cohesion diminished by heat; and yet it still remains
34 III   |         this change in volume by heat - the mighty powers of steam
35 III   |          of condition as regards heat that I did the water and
36 III   |     afforded us by the action of heat, and among these one of
37 III   |     arranged. If I were to apply heat to it you know what we should
38 III   |      liquid state as soon as the heat was removed. Now by means
39 III   |          Mr. Anderson will apply heat to it: we have here different
40 III   |      when, by the application of heat, the chlorate of potash
41 IV    |          IV: Chemical Affinity - Heat~We shall have to pay a little
42 IV    |  chemical affinity is to produce Heat and light; you know, as
43 IV    |        bodies burn they give out heat, but it is a curious thing
44 IV    |          curious thing that this heat does not continue; the heat
45 IV    |      heat does not continue; the heat goes away as soon as the
46 IV    |       affinity to give light and heat, they go away immediately
47 IV    |        This lamp seems to evolve heat and light continuously,
48 IV    |      work of producing light and heat by chemical affinity will
49 IV    |        this curious condition of heat? Why, it is the evolution
50 IV    |        under our notice. What is heat? We recognize heat by its
51 IV    |       What is heat? We recognize heat by its power of liquefying
52 IV    |  affinity. Then how do we obtain heat? We obtain it in various
53 IV    |      ways. Friction will produce heat. The Indians rub pieces
54 IV    |        but I can readily produce heat enough to ignite some phosphorus. [
55 IV    |      show you that we can obtain heat, not by chemical affinity
56 IV    |         again and again, getting heat enough by the compression
57 IV    |          show you how we procure heat. And now for the effects
58 IV    |    results of the application of heat. I want you now to see how
59 IV    |         under water, because the heat which he applies to the
60 IV    |       all. Again, as soon as the heat escapes from bodies, they
61 IV    |   perfect proof of this power of heat to contract and expand bodies.~ ~
62 IV(23)|      carefully dried at a gentle heat. The paper is then saturated
63 V     |        can transfer the power of heat from one thing to another;
64 V     |      this wire to it some of the heat will be transferred from
65 V     |       see how I can transfer the heat from the ball to the wire,
66 V     |        not. Observe how long the heat stops in this ball. I might
67 V     |        from place to place. Both heat and electricity can be conducted;
68 V     |        of obtaining the power of heat) and place it under that
69 V     |        more distant ones, as the heat travels along, and thus
70 V     |          you will learn that the heat travels gradually through
71 V     |        round, and then apply the heat of this lamp to the place
72 V     |       join, you will see how the heat will accumulate where the
73 V     |        the metal is beneath, the heat is conducted away too fast
74 V     |          badly the wood conducts heat. But with regard to the
75 V     |         from the transmission of heat through this copper bar
76 VI    |       another - how the force of heat affects chemical affinity,
77 VI    |         apply to it the power of heat, admitting the contact of
78 VI    |          this very spark and the heat it produces (for there is
79 VI    |        it produces (for there is heat) is neither more nor less
80 VI    |          at the battery see what heat we get. Is not that beautiful?
81 VI    |        you see what an amount of heat is evolved; this is the
82 VI    |          is evolved; this is the heat which the zinc would give
83 VI    |          and more intense is the heat, until at last our platinum
84 VI    |         is evolved at this point heat, or electricity, or any
85 VI    |         effects of combustion or heat, but I will take these two
86 VI    | electricity and chemical action, heat and light from a magnet,