A Plain and Familiar Introduction to the Newtonian Philosophy |
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Page 12
... placed in a Sand - Heat , its Action will be render'd much ftronger , and it will diffolve much more of the Metal ; and then if it be taken off , and fet by to cool , it will as it grows colder , have its attracting Power leffen'd , and ...
... placed in a Sand - Heat , its Action will be render'd much ftronger , and it will diffolve much more of the Metal ; and then if it be taken off , and fet by to cool , it will as it grows colder , have its attracting Power leffen'd , and ...
Page 23
... placed over thofe two Parts , it will be as it were attracted , accumulated and condensed in the Iron , and from thence will be emitted or communicated with much greater Force and Intenfity than from the Stone itself . 60. The ...
... placed over thofe two Parts , it will be as it were attracted , accumulated and condensed in the Iron , and from thence will be emitted or communicated with much greater Force and Intenfity than from the Stone itself . 60. The ...
Page 25
... placed in the Midft of them ; it will be very pleasant to obferve how all the Steel Particles are affected with the Virtue iffuing from each Pole of the Stone , by which they are moved into Curve - lined Directions , and circular ...
... placed in the Midft of them ; it will be very pleasant to obferve how all the Steel Particles are affected with the Virtue iffuing from each Pole of the Stone , by which they are moved into Curve - lined Directions , and circular ...
Page 30
... placed near the Mirrour in the Axis at ( d ) and let d G be a Ray of Light paffing from it to the Mirrour in G ... placed in the Focus F , the Ray F G will be reflected into G D parallel to the Axis . And lastly , if it be placed nearer ...
... placed near the Mirrour in the Axis at ( d ) and let d G be a Ray of Light paffing from it to the Mirrour in G ... placed in the Focus F , the Ray F G will be reflected into G D parallel to the Axis . And lastly , if it be placed nearer ...
Page 31
... placed in the Center C , the Image would be there form'd alfo , in an inverted Pofition and equal to the Object : If the Ob- ject be placed between the Center C and Fo- cus F , as at IM , then will OB be the Image form'd beyond the ...
... placed in the Center C , the Image would be there form'd alfo , in an inverted Pofition and equal to the Object : If the Ob- ject be placed between the Center C and Fo- cus F , as at IM , then will OB be the Image form'd beyond the ...
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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...