| Table of Contents | Words: Alphabetical - Frequency - Inverse - Length - Statistics | Help | IntraText Library | ||
| Alphabetical [« »] without 15 wood 4 word 1 work 126 worked 1 working 9 workman 1 | Frequency [« »] 203 it 156 by 134 as 126 work 125 that 125 we 101 be | Hermann Ludwig Ferdinand von Helmholtz On the Conservation of Force IntraText - Concordances work |
bold = Main text
Part grey = Comment text
1 Int | art came together in his work on esthetics, and he had
2 I | understand the forces at work in the world in which he
3 I | regards the kind of scientific work. I then endeavoured to show
4 I | what we call amount of work in the mechanical sense
5 I | of the word.~The idea of work for machines, or natural
6 I | concerned. In speaking of the work of machines and of natural
7 I | of the hard and intense work of thinking, which tries
8 I | intelligence is met with in the work of machines, of course is
9 I | assigned to the instrument at work.~Now, the external work
10 I | work.~Now, the external work of man is of the most varied
11 I | used on it, and the kind of work produced. But both the arm
12 I | is incapable of doing any work; the moving force of the
13 I | of the muscle must be at work in it, and these must obey
14 I | and weaving frames, the work of which rivals that of
15 I | of the muscles.~Now, the work of the smith requires a
16 I | we speak of the amount of work of a machine. We have nothing
17 I | of becoming exhausted by work is also met with in the
18 I | when their capacity for work is spent, there is a possibility
19 I | understand by amount of work; but we must endeavour,
20 I | to measure the amount of work. This we can do better by
21 I | activity can be restored.~The work which the weight has to
22 I | must be continually at work. Such a one is the weight.~
23 I | measure for the amount of work. Let us assume that a clock
24 I | others, ten times as much work is performed for ten pounds
25 I | fall being the same, the work increases directly as the
26 I | therefore do twice as much work as when it can only run
27 I | weight being the same, the work increases as the height
28 I | off all as a measure of work, at any rate, in the present
29 I | for measuring magnitude or work is a foot pound - that is,
30 I | that is, the amount of work which a pound raised through
31 I | may apply this measure of work to all kinds of machines,
32 I | had performed a certain work, Hence it is that the measurement
33 I | that the measurement of work by foot pounds is universally
34 I | that case be simpler to work the machine by the direct
35 I | levels, it may be used to work other wheels. But when it
36 I | one man must necessarily work four times as long as the
37 I | the total expenditure of work is the same, whether four
38 I | whether four labourers work for a quarter of an hour
39 I | labour, we introduce the work of a weight, and hang to
40 I | also, you will observe no work has been gained, for while
41 I | through one inch is, as work, equivalent to the product
42 I | but that the amount of work is never thereby increased.~
43 I(1) | the technical measure of work; to convert it into scientific
44 II | motive force, and can produce work, is called vis viva. The
45 II | velocity has been lost by the work which they have performed.~
46 II | mechanics, of performing work. This would also be the
47 II | mass. It is equal to the work, expressed in foot-pounds,
48 II | weight goes from a to m the work of the raised weight is
49 II | viva is changed into the work of a raised weight. Thus
50 II | raised weight. Thus the work which the arm originally
51 II | spring can, however, perform work; it gradually expends this
52 II | stretch the cord my arm must work for a few seconds; this
53 II | for a few seconds; this work is imparted to the arrow
54 II | extremely short time the entire work which the arm had communicated
55 II | several days. In both cases no work is produced which my arm
56 II | already seen is a form of work.~In this case, then, I have
57 II | case, then, I have gained work which my arm has not performed.
58 II | under the influence of which work has been gained.~Elastic
59 II | cases liquid is raised, and work thereby produced.~The same
60 II | the machine, and furnish work.~You all know how powerful
61 II | the further capacity for work of the natural forces is
62 II | diminished or exhausted by the work which has been performed.
63 II | namely, that to mechanical work - had not been accurately
64 II | endeavoured to deduce the work which heat performs, by
65 II | the capacity of heat for work, which even now, though
66 II | equivalent of a mechanical work; so long as this velocity
67 II | apparently also the mechanical work which this velocity could
68 II | processes in which mechanical work is destroyed, and heat produced
69 II(2)| technical measure of the work we must divide it by the
70 III | foot pounds the amount of work which is destroyed by the
71 III | produced by the consumption of work, a definite quantity of
72 III | a definite quantity of work is required to produce that
73 III | centigrade. The quantity of work necessary for this is, according
74 III | experiments, equal to the work which a gramme would perform
75 III | relations between heat and work were also found in the reverse
76 III | process - that is, when work was produced by heat. In
77 III | producing large quantities of work, as in the case of the steam
78 III | does it. Gas thus performs work, and this work is produced
79 III | performs work, and this work is produced at the cost
80 III | compressed, and how much work is necessary for their compression;
81 III | equivalence of heat and mechanical work in friction, as close an
82 III | into a definite quantity of work; this quantity of work can
83 III | of work; this quantity of work can also be retransformed
84 III | form in which a quantity of work may appear.~These facts
85 III | transformed into other forms of work, or results afresh from
86 III | forces which can produce work - I mean the chemical. We
87 III | the ultimate cause of the work which gunpowder and the
88 III | carbon and of oxygen performs work just as much as that which
89 III | just as the same amount of work is produced when a weight
90 III | longer produce either heat or work any more than a fallen weight
91 III | than a fallen weight can do work if it has not been again
92 III | once more the capacity of work which they had before they
93 III | carbon for oxygen, performs work in combustion, which appears
94 III | before, but its capacity for work is lost. Hence the two elements
95 III | for it its capacity for work.~We here become acquainted
96 III | acquainted with a new source of work, the electric current which
97 III | affinity which is capable of work, it is here lost. The electrical
98 III | this case, we can restore work which has been lost, but
99 III | turns the wheel produces the work which is required for separating
100 III | raised weight can produce work, but in doing so it must
101 III | but it can no longer do work.~A stretched spring can
102 III | stretched spring can do work, but in so doing it becomes
103 III | of a moving mass can do work, but in doing so it comes
104 III | to rest. Heat can perform work; it is destroyed in the
105 III | Chemical forces can perform work, but they exhaust themselves
106 III | Electrical currents can perform work, but to keep them up we
107 III | that their capacity for work is exhausted in the degree
108 III | which they actually perform work.~We have seen, further,
109 III | fell without performing any work, it either acquired velocity
110 III | electrical currents or mechanical work.~We have seen that heat
111 III | heat may be changed into work; there are apparatus (thermo-electric
112 III | whenever the capacity for work of one natural force is
113 III | force which is capable of work. The connections between
114 III | accustomed to measure mechanical work, and how the equivalent
115 III | and how the equivalent in work of heat may be found. The
116 III | found. The equivalent in work of chemical processes is
117 III | relations, the equivalent in work of the other natural forces
118 III | expressed in terms of mechanical work.~If, now, a certain quantity
119 III | certain quantity of mechanical work is lost, there is obtained,
120 III | an equivalent of heat or work; so that in all these interchanges
121 III | all the forces capable of work in the whole universe remains
122 III | practical interests of technical work, we have been led up to
123 III | understood a machine which was to work continuously without the
124 III | the expenditure of fuel. Work is wealth. A machine which
125 III | machine which could produce work from nothing was as good
126 IV | the great operations at work in the life of the earth