Book, Aphorism

  1        1, LXXV    |               operation; as, that the heat of the sun and of fire are
  2        1, LXXXVIII|              to the doctrine that the heat of the sun and of fire differ
  3        1, XCIX    |       rotation of heavenly bodies, of heat, cold, light, hardness,
  4        1, XCIX    |               rest; not less than for heat and cold, or light, or vegetation,
  5        1, XCIX    |               nature (as whiteness or heat) in certain subjects only,
  6        1, XCIX    |              superinduced by fire and heat and other modes of solution
  7        1, XI      |     investigation be into the form of heat.~Instances Agreeing in the
  8        1, XI      |             Agreeing in the Nature of Heat~1. The rays of the sun,
  9        1, XI      |             most powerful and glowing heat if confined, as in reverbatory
 10        1, XI      |               and down of birds, have heat.~14. All bodies, whether
 11        1, XI      |     internally; though in insects the heat is not perceptible to the
 12        1, XI      |             vitriol has the effect of heat in burning linen.~23. Oil
 13        1, XI      |               oils have the effect of heat in burning the bones of
 14        1, XI      |             of wine has the effect of heat, insomuch that the white
 15        1, XI      |              that which is created by heat.~27. Even keen and intense
 16        1, XII     |         Proximity where the Nature of Heat is Absent~Answering to the
 17        1, XII     |             and give intensity to the heat of the sun, as is the case
 18        1, XII     |         region of the air do not give heat; for which there is commonly
 19        1, XII     |              ineffective in producing heat, insomuch that the Dutch
 20        1, XII     |            depending on the nature of heat, which are not proportioned
 21        1, XII     |               they have the effect of heat.~4. Try the following experiment.
 22        1, XII     |             whether it diminishes the heat of the sun, as a burning
 23        1, XII     |             the same is the case with heat.~To the 2nd~5. Let the experiment
 24        1, XII     |              atmosphere in respect to heat and cold. Thus, let the
 25        1, XII     |            glass also be tried with a heat that does not emit rays
 26        1, XII     |              ensue an increase of the heat, as in the case of the sun'
 27        1, XII     |              effect in increasing the heat of the season, though it
 28        1, XII     |               about the time of great heat. Falling stars, as they
 29        1, XII     |               on a wall, has not much heat, perhaps as much as the
 30        1, XII     |       appearance without any manifest heat. And it is a well-known
 31        1, XII     |              Lung. With regard to the heat of the flame which was called
 32        1, XII     |              in itself with regard to heat and cold. For air manifestly
 33        1, XII     |         vessel and test the degree of heat or cold by applying either
 34        1, XII     |       proceeds from a faint degree of heat inherent in them, as being
 35        1, XII     |            not acquire some degree of heat from the very percussion,
 36        1, XII     |             not so rapid as to excite heat, and is the motion of a
 37        1, XII     |               if it does not generate heat.~To the 17th.~23. On this
 38        1, XII     |           seem to contain some latent heat, though so slight that it
 39        1, XII     |               there arises a palpable heat, and sometimes flame in
 40        1, XII     |               water seems to contract heat either by the concentration
 41        1, XII     |               by the concentration of heat before dispersed, as in
 42        1, XII     |      dissolved by aqua regia gives no heat to the touch; no more does
 43        1, XII     |              not only excite a strong heat in dissolution but also
 44        1, XII     |            appears therefore that the heat is produced by conflict,
 45        1, XII     |           easily, there is hardly any heat excited.~To the 20th.~26.
 46        1, XII     |               To the 20th.~26. To the heat of animals no negative is
 47        1, XII     |             degree than an absence of heat that is noted. But in vegetables
 48        1, XII     |          plants there is no degree of heat perceptible to the touch,
 49        1, XII     |            found a great diversity of heat, both in their parts (there
 50        1, XII     |            being different degrees of heat about the heart, in the
 51        1, XII     |           have manifestly a potential heat, as is seen in the enriching
 52        1, XII     |            intense acridity, act like heat in tearing asunder bodies
 53        1, XII     |            and observe whether by its heat it in any degree melts them.
 54        1, XII     |            power in it that resembles heat in producing incrustation.
 55        1, XII     |          spirit may better retain its heat, and observe whether by
 56        1, XII     |            and observe whether by its heat it makes the water sink.~
 57        1, XII     |           they produce the effects of heat. Sailors tell us that when
 58        1, XII     |           with a certain sensation of heat.~To the 27th.~32. There
 59        1, XII     |           many actions common both to heat and cold, though in a very
 60        1, XII     |                no less than fire; and heat contracts bodies, which
 61        1, XIII    |              Degrees or Comparison in Heat~I will therefore first speak
 62        1, XIII    |           contain no degree at all of heat perceptible to the touch,
 63        1, XIII    |              have a certain potential heat only, or disposition and
 64        1, XIII    |            the conflict of bodies, as heat is caused in the dissolution
 65        1, XIII    |             is therefore no degree of heat palpable to the touch in
 66        1, XIII    |            far, however, as potential heat and aptitude for flame is
 67        1, XIII    |             as horse dung from animal heat, and lime or perhaps ashes
 68        1, XIII    |               remains of their former heat. Hence certain distillations
 69        1, XIII    |               them in horse dung, and heat is excited in lime by sprinkling
 70        1, XIII    |               and buried, retains its heat. But yet all dung seems
 71        1, XIII    |             seems to have a potential heat, as is seen in the fattening
 72        1, XIII    |             such latent and potential heat, insomuch that in burying
 73        1, XIII    |             collects a certain hidden heat which consumes a body newly
 74        1, XIII    |              have some disposition to heat.~7. All putrefaction contains
 75        1, XIII    |          certain elements of a slight heat, though not so much as to
 76        1, XIII    |             which shines in the dark. Heat, however, in putrid substances
 77        1, XIII    |                8. The first degree of heat therefore among those substances
 78        1, XIII    |            the touch, seems to be the heat of animals, which has a
 79        1, XIII    |             scarcely equals the sun's heat in the hottest countries
 80        1, XIII    |                9. Animals increase in heat by motion and exercise,
 81        1, XIII    |              the different degrees of heat in different animals, as
 82        1, XIII    |              the different degrees of heat in the different parts and
 83        1, XIII    |                But what the degree of heat is in the brain, stomach,
 84        1, XIII    |               be even hotter.~14. The heat of the heavenly bodies,
 85        1, XIII    |             16. The sun gives greater heat the nearer he approaches
 86        1, XIII    |               the proportion of their heat. Jupiter, for instance,
 87        1, XIII    |               other planets give more heat in perigee, from their proximity
 88        1, XIII    |           near the perpendicular, his heat must of necessity be greater
 89        1, XIII    |              supposed to give greater heat when nearer to the larger
 90        1, XIII    |             heavens shed the greatest heat (though it be not at all
 91        1, XIII    |             size.~19. Altogether, the heat of the heavenly bodies is
 92        1, XIII    |         combination of stars.~20. The heat of animals, and of the rays
 93        1, XIII    |              linen on fire, which the heat of animals will never do,
 94        1, XIII    |          strength and weakness in the heat of flame and ignited bodies.
 95        1, XIII    |        acrimony. But the most violent heat is found in pitch and rosin;
 96        1, XIII    |              which have so stubborn a heat that they are not easily
 97        1, XIII    |              are different degrees of heat, though these again have
 98        1, XIII    |      diligently examined. The weakest heat of all, I think, is that
 99        1, XIII    |           some are found to exceed in heat many flames and ignited
100        1, XIII    |      substances.~27. Motion increases heat, as you may see in bellows
101        1, XIII    |        increases the operation of the heat.~29. Fires which break out
102        1, XIII    |               to a hot body increases heat in proportion to the degree
103        1, XIII    |             different heats increases heat, unless the hot substances
104        1, XIII    |           room increase one another's heat; but warm water plunged
105        1, XIII    |               of a hot body increases heat, because heat perpetually
106        1, XIII    |               increases heat, because heat perpetually passing and
107        1, XIII    |               the previously existing heat, and so multiplies the heat.
108        1, XIII    |           heat, and so multiplies the heat. For a fire does not warm
109        1, XIII    |            surrounding cold increases heat, as you may see in fires
110        1, XIII    |    confinement and contraction of the heat, which is a kind of union,
111        1, XIII    |          degrees in susceptibility of heat. And first of all it is
112        1, XIII    |       observed how slight and faint a heat changes and somewhat warms
113        1, XIII    |           least of all susceptible of heat. Even the heat of the hand
114        1, XIII    |         susceptible of heat. Even the heat of the hand communicates
115        1, XIII    |            the hand communicates some heat to a ball of lead or any
116        1, XIII    |         readily and so universally is heat transmitted and excited,
117        1, XIII    |            readily receives and loses heat is air; as is best seen
118        1, XIII    |              which was dilated by the heat will, after a lapse of time
119        1, XIII    |       extinction of that adventitious heat, withdraw and contract itself
120        1, XIII    |           expands under the action of heat; as will be seen by the
121        1, XIII    |                But the air's sense of heat and cold is so subtle and
122        1, XIII    |               ray of sunshine, or the heat of the breath, much more
123        1, XIII    |             the breath, much more the heat of one's hand placed on
124        1, XIII    |               spirits have a sense of heat and cold more exquisite
125        1, XIII    |               to be most sensitive to heat which have been recently
126        1, XIII    |              and melt with any gentle heat. Next to them, perhaps,
127        1, XIII    |             metals, which are slow to heat, especially in the inside.
128        1, XIII    |               once they have acquired heat retain it very long; in
129        1, XIII    |            body; which shows that all heat of which we have experience
130        1, XIII    |               to tangible matter.~41. Heat, as far as regards the sense
131        1, XVII    |      constitute any simple nature, as heat, light, weight, in every
132        1, XVII    |             of them. Thus the form of heat or the form of light is
133        1, XVII    |              same thing as the law of heat or the law of light. Nor
134        1, XVII    |          investigation of the form of heat, "reject rarity," or "rarity
135        1, XVII    |             not belong to the form of heat," it is the same as if I
136        1, XVII    |               possible to superinduce heat on a dense body"; or, "It
137        1, XVII    |              to take away or keep out heat from a rare body."~But if
138        1, XVII    |         things heterogeneous (for the heat of heavenly bodies and the
139        1, XVII    |               heavenly bodies and the heat of fire seem to be very
140        1, XVII    |            severally in the nature of heat, redness, death); if anyone,
141        1, XVII    |             form or law which governs heat, redness and death; and
142        1, XVIII   |              to belong to the form of heat; observing in the meantime
143        1, XVIII   |              Natures from the Form of Heat~1. On account of the rays
144        1, XVIII   |             metals, which communicate heat to other bodies and yet
145        1, XVIII   |             other solids that receive heat but not to ignition or red
146        1, XVIII   |            but not to ignition or red heat, reject light or brightness.~
147        1, XVIII   |           which ignited iron has more heat and less brightness, while
148        1, XVIII   |              more brightness and less heat), also reject light and
149        1, XVIII   |               no manifest increase of heat, also reject local or expansive
150        1, XVIII   |          effects which are wrought by heat and cold, reject motion
151        1, XVIII   |        contractive.~14. On account of heat being kindled by the attrition
152        1, XVIII   |             not belong to the form of heat. And from all of them man
153        1, XVIII   |            freed in his operations of heat.~
154        1, XX      |        Vintage Concerning the Form of Heat~It is to be observed that
155        1, XX      |        vintage concerning the form of heat.~From a survey of the instances,
156        1, XX      |             each, the nature of which heat is a particular case, appears
157        1, XX      |             excitement or increase of heat caused by motion, as in
158        1, XX      |            the extinction of fire and heat by any strong compression,
159        1, XX      |          strong and vehement fire and heat; whence it is quite clear
160        1, XX      |         whence it is quite clear that heat causes a tumult and confusion
161        1, XX      |              is as the genus of which heat is a species, I would be
162        1, XX      |           understood to mean not that heat generates motion or that
163        1, XX      |              or that motion generates heat (though both are true in
164        1, XX      |              certain cases), but that heat itself, its essence and
165        1, XX      |          avoiding ambiguity.~Sensible heat is a relative notion, and
166        1, XX      |               as merely the effect of heat on the animal spirits. Moreover,
167        1, XX      |      perception of cold as well as of heat. This is clear from Inst.
168        1, XX      |             must the communication of heat, or its transitive nature,
169        1, XX      |           confounded with the form of heat. For heat is one thing,
170        1, XX      |            with the form of heat. For heat is one thing, heating another.
171        1, XX      |               thing, heating another. Heat is produced by the motion
172        1, XX      |       attrition without any preceding heat, an instance which excludes
173        1, XX      |              heating from the form of heat. And even when heat is produced
174        1, XX      |           form of heat. And even when heat is produced by the approach
175        1, XX      |              proceed from the form of heat, but depends entirely on
176        1, XX      |            combination in any body of heat and brightness, as in common
177        1, XX      |             constitute it the form of heat.~The first difference then
178        1, XX      |              difference then is this. Heat is an expansive motion whereby
179        1, XX      |              liquid state. And if the heat be greatly increased it
180        1, XX      |      manifestly dilates with a slight heat, as appears in Inst. 38.
181        1, XX      |             Nor is it surprising that heat and cold should exhibit
182        1, XX      |           diametrically opposite. For heat gives an expansive and dilating,
183        1, XX      |              the former, namely, that heat is a motion expansive or
184        1, XX      |             like manner the motion of heat is at once a motion of expansion
185        1, XX      |            tends upward, but also all heat.~But let trial be made of
186        1, XX      |           contract a body downward as heat dilates a body upward. Take
187        1, XX      |             opposite is the case with heat.~The third specific difference
188        1, XX      |              difference is this: that heat is a motion of expansion,
189        1, XX      |          springs the fury of fire and heat.~This specific difference
190        1, XX      |            ignited iron, in which the heat is very sharp.~It is shown
191        1, XX      |               there is no perceptible heat. Also when wind escapes
192        1, XX      |                there is no very great heat perceptible; because the
193        1, XX      |        tendency to expand, just as in heat the expansive motion is
194        1, XX      |             particles very small, the heat is not perceived.~It is
195        1, XX      |              is dissolved without any heat being excited, while the
196        1, XX      |              accompanied by a violent heat, though it takes place in
197        1, XX      |             which do not excite great heat or pain on account of the
198        1, XX      | Interpretation concerning the form of heat, made by way of indulgence
199        1, XX      |            form or true definition of heat (heat, that is, in relation
200        1, XX      |              true definition of heat (heat, that is, in relation to
201        1, XX      |             in few words, as follows: Heat is a motion, expansive,
202        1, XX      |             will undoubtedly generate heat; without taking into account
203        1, XX      |      above-mentioned motion. Sensible heat is the same thing; only
204        1, XXI     |         proceed upon the Instances of Heat and Cold; but when a smaller
205        1, XXIV    |              First Vintage Concerning Heat, and which I also call Shining
206        1, XXIV    |               nature inquired into be heat. A striking instance of
207        1, XXIV    |           main element in the form of heat, is a calendar glass of
208        1, XXVI    |             species of communication; heat and the magnet another.
209        1, XXVI    |               the original light. But heat and the virtue of the magnet,
210        1, XXVII   |             say, the greater force of heat in the male thrusts the
211        1, XXVII   |             whereas in the female the heat is too feeble to effect
212        1, XXVII   |          circumference of the sky, of heat toward the bowels of the
213        1, XXXIII  |             the nature in question be heat. An instance of companionship
214        1, XXXIII  |            and most other substances, heat is variable, and may come
215        1, XXXIII  |             all flame is hot, so that heat is always in attendance
216        1, XXXIII  |            But no hostile instance of heat is to be found here. For
217        1, XXXIII  |            that is not susceptible to heat.~But to take another instance:
218        1, XXXIII  |              have done in the case of heat, where a universal negative (
219        1, XXXIII  |              that which is not; as in heat, the gentlest and least
220        1, XXXV    |             the nature in question be heat. We are told (and it seems
221        1, XXXV    |              there are three kinds of heat: the heat of heavenly bodies,
222        1, XXXV    |              three kinds of heat: the heat of heavenly bodies, the
223        1, XXXV    |               of heavenly bodies, the heat of animals, and the heat
224        1, XXXV    |              heat of animals, and the heat of fire; and that these
225        1, XXXV    |              heterogeneous, since the heat of heavenly bodies and of
226        1, XXXV    |              and cherishes, while the heat of fire wastes and destroys.
227        1, XXXV    |             of difference between the heat of the sun and of fire which
228        1, XXXV    |           four. The first is that the heat of the sun compared with
229        1, XXXV    |             the sun compared with the heat of fire is far milder and
230        1, XXXV    |        through the zodiac; whence the heat of the sun, partly by the
231        1, XXXV    |       production; since inequality of heat ministers to generation
232        1, XXXV    |       specific difference between the heat of the sun and of fire,
233        1, XXXV    |              diligently to temper the heat of fire and reduce it to
234        1, XXXV    |            all he were to imitate the heat of the sun in its inequality;
235        1, XXXV    |          notion of different kinds of heat, and would attempt to imitate,
236        1, XXXV    |               works of the sun by the heat of fire. We have a similar
237        1, XXXV    |              sometimes hatched by the heat of fire, which thus exactly
238        1, XXXV    |               exactly imitates animal heat. And there are many instances
239        1, XXXV    |             no one can doubt that the heat of fire may in many subjects
240        1, XXXV    |        modified so as to resemble the heat of heavenly bodies and of
241        1, XXXVI   |            bodies do when affected by heat), and by thus flying and
242        1, XXXVII  |              chamber fellows, namely: heat, brightness, rarity, mobility
243        1, XXXVII  |            the moon is bright without heat; boiling water is hot without
244        1, XXXVII  |               indeed, and sounds, and heat, and certain other things
245        1, XL      |            suddenly discharged by the heat of fire, they hasten so
246        1, XL      |               expanded and excited by heat or something analogous thereto (
247        1, XL      |            the contrary operations of heat, which hardens some substances
248        1, XL      |              the proper action of the heat and spirit, the hardening
249        1, XL      |             life both mildness in the heat and pliancy in the substance,
250        1, XL      |              a small vessel that less heat might be required to produce
251        1, XL      |             rendered pneumatic by the heat, began gradually to expand
252        1, XL      |               on the cessation of the heat and so disturb the calculations.
253        1, XL      |             the nature in question be heat or cold, in a degree too
254        1, XL      |              described above. For the heat and cold are not themselves
255        1, XL      |     perceptible to the touch, but the heat expands the air, and the
256        1, XL      |       expansion of the water from the heat of the fire.~So in general,
257        1, XLII    |               which does not contract heat on being brought near the
258        1, XLII    |           fire. And yet air contracts heat much more quickly than stone.
259        1, XLIII   |         violet, rose, etc.; moreover, heat and cold and magnetic influences —
260        1, XLIII   |              delicate one; an intense heat a milder one; a plate of
261        1, XLV     |              naphtha of Babylon does. Heat also insinuates itself at
262        1, XLVI    |                of measurement. As for heat, we see boys in wintertime
263        1, XLVIII  |             rate the most common, are heat and cold. For instance,
264        1, XLVIII  |             to recover itself. But if heat be applied, it longs, on
265        1, XLVIII  |             without interruption from heat, as in grottoes and caverns
266        1, XLVIII  |               three things: either by heat, or by the eminent virtue
267        1, XLVIII  |                And as for the help of heat, it is for this reason that
268        1, XLVIII  |               is for this reason that heat has been denned to be "that
269        1, XLVIII  |           from a peculiar property of heat, but only indirectly (for
270        1, XLVIII  |           homogeneous parts to unite, heat simply aiding to shake off
271        1, XLVIII  |           rejections of the nature of heat from the inner parts of
272        1, XLVIII  |               parts of the earth. For heat and cold, in small quantities,
273        1, XLVIII  |      multiplied and transferred; more heat being engendered, more magnetic
274        1, XLVIII  |           particularly conspicuous in heat and cold. For heat does
275        1, XLVIII  |     conspicuous in heat and cold. For heat does not diffuse itself,
276        1, XLVIII  |         communication of the original heat but simply by exciting the
277        1, XLVIII  |           motion which is the form of heat, of which I have spoken
278        1, XLVIII  |              concerning the nature of heat. Consequently heat is excited
279        1, XLVIII  |          nature of heat. Consequently heat is excited far more slowly
280        1, XLVIII  |          heated body when the primary heat has been removed; in magnetized
281        1, XLVIII  |                another sound, another heat and cold, another magnetic
282        1, L       |       agitations, and the like; or by heat and cold; or by continuance
283        1, L       |          great use in keeping off the heat of the sun and that open
284        1, L       |          rarefied by a high degree of heat, cannot be contained in
285        1, L       |        instrument of operation, viz., heat and cold. And herein man'
286        1, L       |             one side. For we have the heat of fire which is infinitely
287        1, L       |           potent and intense than the heat of the sun as it reaches
288        1, L       |          perhaps in comparison as the heat of the sun at noon in the
289        1, L       |         mountains and walls. For such heat as well as such cold can
290        1, L       |         nothing to be compared to the heat of a burning furnace, or
291        1, L       |            the others are.~As regards heat, man indeed has abundant
292        1, L       |            For the effects of intense heat are sought for and brought
293        1, L       |                but those of a gentler heat, which fall in most with
294        1, L       |               operations of a gentler heat ought to have been tried
295        1, L       |       quarters and investigated — the heat of heavenly bodies by their
296        1, L       |              glasses and mirrors; the heat of lightning, of flame,
297        1, L       |             effects and operations of heat when applied and withdrawn
298        1, L       |           great to be expected from a heat either vehement or precipitate
299        1, L       |              is a great inequality of heat, from the motion, sleep,
300        1, L       |             operations and effects of heat. To examine them thoroughly
301        1, L       |      destroyed by fire or any violent heat. Meanwhile it would not