Lectures on Natural and Experimental Philosophy, Considered in It's Present State of Improvement: Describing, in a Familiar and Easy Manner, the Principal Phenomena of Nature; and Shewing, that They All Co-operate in Displaying the Goodness, Wisdom, and Power of GodR. Hindmarsh, 1794 - Physics |
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Lectures on Natural and Experimental Philosophy, Considered in It's Present ... George Adams No preview available - 2015 |
Common terms and phrases
abforbed aeriform alfo alſo animal atmoſpheric air becauſe bodies boiling cafe caufe cauſe charcoal cold combuftion common air condenfed confequently confiderable confifts degree of heat difcovered difengaged diffolved diminiſhed eafily effect elaftic elaſtic equal evaporation exhaufted expanfion experiments expofed falt fame feems fenfes fenfible feparated fhall fhew fhould firft firſt fixed air flame fluid fmall folar folid fome foon ftate fteam ftill ftring fubftance fubject fuch fufficient fulphur fuppofed fupport furface furrounding fyftem glafs inches increaſe inflammable air inftrument itſelf latent fire lefs light lungs meaſure mephitis mercury metals moft moſt motion muſt nature neceffary nitrous acid obferved occafioned paffing particles philofophy phlogiſticated pifton prefent preffure principle produced pulfes pump purpoſe quantity of fire quickfilver raiſed reafon receiver refiftance refpiration rife ſmall ſpace ſtate ſubſtance temperature thefe thermometer theſe thofe thoſe tube uſed vapour veffel vital air weight whofe
Popular passages
Page 51 - ... which makes a difference between the weights of each two contiguous parts of air. By a theorem in geometry, where the differences of magnitudes...
Page 57 - In every case, the assent ought to be proportioned to the evidence ; for to believe firmly what has but a small degree of probability, is a manifest abuse of our understanding. Now, though we may, in many cases, form very probable conjectures concerning the works of men, every conjecture we can form with regard to the works of God has as little probability as the conjectures of a child with regard to the works of a man.
Page 448 - In this the fragrant rose and deadly nightshade co-operate; nor is the herbage, nor the woods that flourish in the most remote and unpeopled regions unprofitable to us, nor we to them; considering how constantly the winds convey to them our vitiated air, for our relief, and for their nourishment.
Page 58 - If a thousand of the greatest wits that ever the world produced were, without any previous knowledge in anatomy, to sit down and contrive how, and by what internal organs the various functions of the human body are carried on ; how the blood is made to circulate, and the limbs to move, they would not in a thousand years hit upon any thing like the truth.
Page 164 - It is a well-known experiment, that the scratching of a pin at one end of a long piece of timber, may be heard by an ear applied near the other end, though it could not be heard at the same distance through the air. And two...
Page 57 - If the hypothesis hangs well together, is embellished by a lively imagination, and serves to account for common appearances, it is considered by many as having all the qualities that should recommend it to our belief; and all that ought to be required in a philosophical system.
Page 383 - They produce fire with great facility, and spread it in a wonderful manner. To produce it they take two pieces of dry soft wood, one is a stick about eight or nine inches long, the other piece is flat : The stick they shape into an obtuse point at one end, and pressing it upon the other, turn it nimbly by holding it between both their hands as we do a chocolate mill, often shifting their hands up, and then moving them down upon it, to increase the pressure as much as possible. By this method they...
Page 310 - These pans are filled towards evening, in the winter season, with water which has been boiled, and are left in that situation till morning, when more or less ice is found in them, according to the temperature of the air ; there being more formed in dry and warm weather than in cloudy weather, though it may be colder to the human body.
Page 116 - Hence it follows, that when the receiver is exhausted to the above mentioned degree, the moisture adhering to the different parts of the machine will turn into vapour, and supply the place of the air which is continually drawn away by the working of the pump, so that the fluid in the pear gauge, as well as that in the receiver, will consist in good measure of vapour. Now, letting the air into the receiver, all the vapour within the...
Page 52 - ... with the density which, by other experiments, the air ought to have had, it was suspected that the upper parts of the atmospherical regions were not subject to the 'ame laws with the lower ones.