Scientific Dialogues: Intended for the Instruction and Entertainment of Young People : in which the First Principles of Natural and Experimental Philosophy are Fully Explained, Volume 1Baldwin, Cradock, and Joy, 1825 - Astronomy |
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Page 76
... fulcrum he would move the earth itself . Father . Human power , with all the assistance which art can give , is very soon limited , and upon this principle , that what we gain in power , we lose in time . That is , if by your own un ...
... fulcrum he would move the earth itself . Father . Human power , with all the assistance which art can give , is very soon limited , and upon this principle , that what we gain in power , we lose in time . That is , if by your own un ...
Page 78
... fulcrum , papa ? Father . It is a fixed point , or prop , round which the other parts of a machine move . Charles . The pivot , upon which the hands of your watch move , is a fulcrum then . Father . It is , and you remember we called it ...
... fulcrum , papa ? Father . It is a fixed point , or prop , round which the other parts of a machine move . Charles . The pivot , upon which the hands of your watch move , is a fulcrum then . Father . It is , and you remember we called it ...
Page 79
... fulcrum , on which , as the centre of motion , all the other parts turn . A B ( Plate III . Fig . 17. ) will represent a lever , and the point c the fulcrum or centre of motion . Now , it is evident , if the lever turn on its centre of ...
... fulcrum , on which , as the centre of motion , all the other parts turn . A B ( Plate III . Fig . 17. ) will represent a lever , and the point c the fulcrum or centre of motion . Now , it is evident , if the lever turn on its centre of ...
Page 80
... fulcrum between the weight and the power , which is the distinguishing property of levers of the first kind . And when the fulcrum is exactly the middle point between the weight and power , it is the common balance : to which , if ...
... fulcrum between the weight and the power , which is the distinguishing property of levers of the first kind . And when the fulcrum is exactly the middle point between the weight and power , it is the common balance : to which , if ...
Page 81
... fulcrum , applying their own strength to the other : and power is gained in proportion as the distance from the fulcrum to the part where the men apply their strength , is greater than the distance from the fulcrum to that end under the ...
... fulcrum , applying their own strength to the other : and power is gained in proportion as the distance from the fulcrum to the part where the men apply their strength , is greater than the distance from the fulcrum to that end under the ...
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Common terms and phrases
advantage gained angle appear astronomers attraction of cohesion attraction of gravitation axis ball body called centre of gravity centre of motion Charles clock consequently CONVERSATION days and nights degrees diameter distance diurnal motion earth ecliptic Emma Ephemeris equal equator Father feet figure fixed stars force fulcrum full moon globe greater half heat heavens hemisphere hence Herschel horizon inch inclined plane inhabitants James journey Jupiter kind law of motion length less lever light line of direction marble Mars matter means mechanical power Mercury millions of miles minutes moon's move nearer observe orbit papa philosophy planets Plate polar circles poles pound pound weight principle pulleys rays reason retrograde motion revolve rise rotation round the sun Saturn screw seen sidereal day Solar System space passed sun's superior planets suppose surface tides tion turn Tutor velocity Venus visible wedge weight