An Easy Grammar of Natural and Experimental Philosophy: For the Use of SchoolsKimber & Conrad; W. Brown, printer, 1811 - 152 |
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Strona 11
... round the earth perpetually , and never come to a state of rest . In this manner the moon goes round the earth , although she is as inactive as OF MATTER AND ITS PROPERTIES . 11.
... round the earth perpetually , and never come to a state of rest . In this manner the moon goes round the earth , although she is as inactive as OF MATTER AND ITS PROPERTIES . 11.
Strona 12
For the Use of Schools Sir Richard Phillips. round the earth , although she is as inactive as a stone . 3. If a person were standing in a boat , at rest , and the boat be suddenly pushed from the shore , he will be in danger of falling ...
For the Use of Schools Sir Richard Phillips. round the earth , although she is as inactive as a stone . 3. If a person were standing in a boat , at rest , and the boat be suddenly pushed from the shore , he will be in danger of falling ...
Strona 13
... round bodies , and prevent them from coming into actual contact . 13. Where the sphere of attraction ends , a repulsive force begins . B Illustration . The repelling force of the particles of a ATTRACTION AND REPULSION . 13.
... round bodies , and prevent them from coming into actual contact . 13. Where the sphere of attraction ends , a repulsive force begins . B Illustration . The repelling force of the particles of a ATTRACTION AND REPULSION . 13.
Strona 14
... round it . 14. The attraction of gravitation , or gra- vity , is that force , by which distant bodies tend toward one another . · 15. By gravity , a stone dropped from a height falls to the surface of the earth ; and by it the heavenly ...
... round it . 14. The attraction of gravitation , or gra- vity , is that force , by which distant bodies tend toward one another . · 15. By gravity , a stone dropped from a height falls to the surface of the earth ; and by it the heavenly ...
Strona 22
... round by the hand , while it is pulled towards the centre of the circle which it describes by the string . But when the string is let loose , the stone flies off in a tangent to the circle . 45. Every body moved in a circle tends to fly ...
... round by the hand , while it is pulled towards the centre of the circle which it describes by the string . But when the string is let loose , the stone flies off in a tangent to the circle . 45. Every body moved in a circle tends to fly ...
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advantage gained angle angle of incidence appear atmosphere attraction battery body brass called camera obscura candle centre of gravity circle coats colours communication converge convex lens cylinder diameter diurnal motion earth eclipse elastic electric fluid electrified equal Example Experiment Explain eye-glass fall fixed focal distance focus force fulcrum galvanic glass tube Herschel horizon hydrostatical Illustration inches inclined plane kind of lever length line of direction machine magnetic needle means meant mechanical powers mercury meridian metal mirror moon motion move north pole object orbits parallel rays particles pass pendulum perpendicular phial piece pipe piston placed planets plate poles pounds pressure prime conductor proportion pulley quantity quicksilver rays of light reflected refracting telescope refraction repel retina round screw side space specific gravities stars substances surface telescope tion velocity Venus vessel Vesta vibrations weight
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Strona 2 - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
Strona 65 - ... and, consequently, the heat at the focus is to the common heat of the sun, as the area of the glass is to the area of the focus. Thus, if a lens, four inches in diameter, collect the sun's rays into a focus, at the distance of twelve inches, the image will not be more than...
Strona 28 - ... them. Here the power must exceed the weight in the same proportion as the distance of the weight from the prop exceeds the distance of the power.
Strona 70 - And if he hold out his hand towards the mirror, the hand of the image will come out towards his hand, and coincide with it, of an equal bulk, when his hand is in the centre of concavity; and he will imagine he may shake hands with his image.
Strona 63 - If the medium which the rays enter be denser, they move through it in a direction nearer to the perpendicular drawn to its surface. On the contrary, when light passes out of a denser into a rarer medium, it moves in a direction farther from the perpendicular. This refraction is greater or less — that is, the rays are more or less bent, or turned aside from their course — as the second medium through which they pass is more or less dense than the first. To prove this in a satisfactory...
Strona 19 - UB, be drawn parallel to them, so as to complete the parallelogram, then the line which the body A will describe will be in the diagonal AD, and the length of this line will represent the force with which the body will move.
Strona 54 - That upon very great winds, though they be not accompanied with rain, the mercury sinks lowest of all, with relation to the point of the compass the wind blows upon.
Strona 81 - C to all parts of the glass, and each plane surface will refract these rays to the eye, the same object will appear to the eye, in the direction of the rays which enter it through each surface. Thus, a ray...
Strona 43 - The pressure of a fluid upon any given part of the bottom or sides of a vessel is equal to the weight of a column of that fluid, having a base equal to that part of the bottom or side, and an altitude equal to the perpendicular height of the fluid above it.
Strona 23 - If a line be drawn from the centre of gravity of a body perpendicular to the horizon, it is called the line of direction, because it is the line that the centre of gravity would describe if the body fell freely.