A Plain and Familiar Introduction to the Newtonian Philosophy |
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Page 7
... first be well - cleanfed , that when the Metals are heated , and the Solder melted , it may in that fluid State , run freely into the Pores on each Surface , and thereby take the more firm hold of them , and and when hardened with cold ...
... first be well - cleanfed , that when the Metals are heated , and the Solder melted , it may in that fluid State , run freely into the Pores on each Surface , and thereby take the more firm hold of them , and and when hardened with cold ...
Page 33
... first Re- fraction tend to a Point K in the Axis . 16. But as the Ray , paffing thro ' the Glass from E to O , there meets with another con- vex Surface , where it must now be refracted into a rarer Medium , or Body of Air , therefore ...
... first Re- fraction tend to a Point K in the Axis . 16. But as the Ray , paffing thro ' the Glass from E to O , there meets with another con- vex Surface , where it must now be refracted into a rarer Medium , or Body of Air , therefore ...
Page 39
... first , fince the Nerves are appointed the general Organs of all animal Senfation , the Eye being placed in the Head , a Portion of Nerves is fent from the Brain to each Eye , in a round Bundle , as NM ; where it enters the Eye at M ...
... first , fince the Nerves are appointed the general Organs of all animal Senfation , the Eye being placed in the Head , a Portion of Nerves is fent from the Brain to each Eye , in a round Bundle , as NM ; where it enters the Eye at M ...
Page 40
... first Refraction at the Cornea , and adjusting and perfecting the Image upon the Retina ; which is done by occafionally altering its Distance from the Retina , and the Convexity of its Surfaces , 40 A Plain and Familiar Introduction.
... first Refraction at the Cornea , and adjusting and perfecting the Image upon the Retina ; which is done by occafionally altering its Distance from the Retina , and the Convexity of its Surfaces , 40 A Plain and Familiar Introduction.
Page 43
... first of these are so call'd from their re- prefenting Objects plainly to the View which by reafon of their Smallnefs cannot be dif- tinctly seen with the naked Eye . And Telef copes have their Name , from their perfecting , at leaft ...
... first of these are so call'd from their re- prefenting Objects plainly to the View which by reafon of their Smallnefs cannot be dif- tinctly seen with the naked Eye . And Telef copes have their Name , from their perfecting , at leaft ...
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A Plain and Familiar Introduction to the Newtonian Philosophy Benjamin Martin No preview available - 2016 |
Common terms and phrases
againſt alfo alſo appear Attraction Axis Axle becauſe Body Brafs Cafe call'd Caufe cauſe Center confequently confifts convex convex Lens Cornea defcend Degrees Diameter diurnal Motion eafily Earth equal exhaufted Experiment fame feen fhall fhew fhewn fince fink firſt fix'd Fluid fmall focal Diſtance Focus fome Force form'd fuch fuppofe Glafs Glaſs Gravity greater greateſt Heat Hemiſphere Hence Hole HYGROMETERS illuftrate immerfed Inch Inftrument itſelf juſt leaft lefs Lens Meaſure Mercury Mirrour moft Moon moſt Motion move muft muſt Nature neceffarily neceffary Number obferve Object Orbit paffing Particles Pifton placed Plane Pofition Point F Pound Weight Power Preffure prefs Ptolomaic Purpoſe Quantity raiſed Rays of Light Reaſon reflected refracted Reft reprefent Retina retrograde Motion rife ſeen ſhall ſmall Surface Syftem Teleſcope thefe theſe thofe thoſe thro tion Tube Uſe Valve Veffel Velocity Water Weight Wheel whofe
Popular passages
Page 139 - ... bins 755 bushels of grain; there being in the first 125 bushels, and in the second 96 bushels, more than in the third ; how many bushels in the second and third ? Ans. 363 in the second, 267 in the third. 3. There is a certain island 30 miles in circumference. If A and B commence travelling round it, A at the rate of 3 miles an hour, and B at the rate of 5 miles an hour, how far apart will they be at, the end of 30 hours ? 4. Having money to invest, I purchased two farms at $ 1,750 each, and...
Page 113 - ... that a body plunged in a fluid loses as much of its weight as is equal to the weight of an equal volume of the fluid.
Page 140 - A walks at the rate of 3 miles per hour, and B at the rate of 4 miles per hour, after how many hours do they meet and how many miles does A walk ? 20.
Page 93 - ... themselves to any particular sect, selected whatever appeared to them the best and most rational from each. ECLIPSE, the deprivation of the light of the sun, or of some heavenly body, by the interposition of another heavenly body between our sight and it. Thus, eclipses of the sun happen by the moon's intervening between it and the earth ; by which means the shadow of the moon falls upon the earth, when the latitude of the moon does not prevent it, by elevating the moon above, or depressing it...
Page 40 - This is remedied by placing a convex glafs gb before the eye, which makes the rays converge fooner, and imprints the image duly on the retina at d. If either the cornea, or chryftalline humour, or both of them, be too convex, as in the eye...
Page 138 - ... Our earth, which we consider as a planet, is 24 hours in performing one revolution on its axis; in that period of time, therefore, we have a day and a night. Hence this revolution is called the earth's diurnal or daily motion ; and it is this revolution of the earth from west to east which produces an apparent motion of the sun, moon, and stars, in a contrary direction. Let us now suppose ourselves to be beings, independent of any planet, travelling in the skies, and looking upon the earth in...
Page 156 - ... so that it may revolve freely, carrying round with it the attached wheel. On the axis is coiled a rope which sustains the weight ; and round the periphery of the wheel is coiled another rope, in a contrary direction, to which is suspended the power. Then supposing the machine to be put in motion, the velocity of the power will be to that of the weight, as the circumference of the wheel to that of the axle ; for it will be perceived that the power must sink through a space equal to the circumference...
Page 144 - The change of motion is always proportional to the moving force impressed, and is always made according to the right line, in .which that force is impressed.
Page 96 - NIGHT. 101 nights. For an inhabitant at the equator, and one on the same meridian towards the poles, would come into the light at the same time, and, on the other side, would immerge into darkness at the...