An Introduction to the Use of the Globes ... 3. Ed. Corr. and EnlBaldwin, 1816 |
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Página viii
... o'clock it is then , at any other place on the clock . Rule . Set the given hour to the place , and opposite to any other place on the clock is the hour required . Given 2 in the afternoon at Great Britain , required the hour at the ...
... o'clock it is then , at any other place on the clock . Rule . Set the given hour to the place , and opposite to any other place on the clock is the hour required . Given 2 in the afternoon at Great Britain , required the hour at the ...
Página 66
... o'clock it is at any other place given . Bring the given place , at which the hour is known , to the meridian , set ... o'clock at night . Required the time at Calcutta in the East Indies , when it is nine o'clock in the morning at ...
... o'clock it is at any other place given . Bring the given place , at which the hour is known , to the meridian , set ... o'clock at night . Required the time at Calcutta in the East Indies , when it is nine o'clock in the morning at ...
Página 67
... o'clock line passes through France , Spain , Algiers , Guinea , & c . ; the nine - hour line passes through the Brazils and Greenland ; the three o'clock line through Russia , Armenia , Arabia , & c .; six - hour line through Siberia ...
... o'clock line passes through France , Spain , Algiers , Guinea , & c . ; the nine - hour line passes through the Brazils and Greenland ; the three o'clock line through Russia , Armenia , Arabia , & c .; six - hour line through Siberia ...
Página 73
... o'clock , A. M .; required the place that the sun is then vertical to ? Answer , in the Arabian Sea , a little north of Cape Rasel Gat . Required at what place the sun will be vertical on the 21st of March , when it is three o'clock in ...
... o'clock , A. M .; required the place that the sun is then vertical to ? Answer , in the Arabian Sea , a little north of Cape Rasel Gat . Required at what place the sun will be vertical on the 21st of March , when it is three o'clock in ...
Página 113
... o'clock line , mark off on both sides of it the 11 ° 51 ' taken between its points ; through which , from the centre of the circle , draw lines , which will represent the eleven and one o'clock hours , then take 24 ° 19 ′ from the same ...
... o'clock line , mark off on both sides of it the 11 ° 51 ' taken between its points ; through which , from the centre of the circle , draw lines , which will represent the eleven and one o'clock hours , then take 24 ° 19 ′ from the same ...
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Términos y frases comunes
20th of March 21st of June analemma Answer Argo Navis Aries Armillary Sphere brass meridian Bring the given bring the sun's Canis Major Canis Minor Cape Cape Frio centre climate compass constellations diameter difference of latitude distance sailed diurnal motion divide earth eastern verge ecliptic English miles equal equator equinoctial fix the quadrant given day given latitude Given London given place graduated edge hemisphere horizon hour hour-circle index points index will point latitude and longitude length Lizard Point longest day longitude mark meri meridian altitude midnight month moon moon's noon number of degrees oblique ascension orbit parallels of latitude pass planets polar circles PROBLEM quadrant of altitude reckoned Rectify the globe required the place Required the sun's right angles right ascension rising and setting round set the index ship sails side south point stars sun rises sun's place swer turn the globe upper XII vertical
Pasajes populares
Página 11 - Things which are halves of the same are equal to one another. 8. Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another. 9. The whole is greater than its part. 10.
Página 140 - On the plate is represented a total lunar eclipse ; the moon being in the midst of the earth's shadow. Now it will be apparent that in the situation of the sun, earth, and moon, as represented in the figure, this eclipse will be visible from all parts of that hemisphere of the earth which is next the moon, and that the moon's disk will be equally obscured, from whatever point it is seen.
Página 11 - Things which are equal to the same thing are equal to one another. 2. If equals be added to equals the wholes are equal. 3. If equals be taken from equals the remainders are equal. 4. If equals be added to unequals the wholes are unequal. 5. If equals be taken from unequals the remainders are unequal. 6. Things which are double of the same are equal to one another.
Página 107 - ANGLE OF POSITION between two places on the terrestrial globe, is an angle at the zenith of one of the places, formed by the meridian of that place, and a vertical circle passing through the other place...
Página 10 - Again ; the mathematical postulate, that " things which are equal to the same are equal to one another," is similar to the form of the syllogism in logic, which unites things agreeing in the middle term.
Página 66 - ... bring the given place to the meridian, and set the index to the given hour. Turn the globe till the index points to...
Página 128 - Sun's centre, which is 49,000 miles, is within less thin a third part of the Sun's semi-diameter from his surface. In that part of its orbit which is nearest the Sun, it flies...
Página 47 - PERKECI are those who live in the same latitude, but in opposite longitudes ; when it is noon with the one, it is midnight with the other; they have the same length of days, and the same seasons of the year. The inhabitants of the poles can have no Perioeci.
Página 69 - Rectify the globe for the latitude of the place. Bring the sun's place in the ecliptic to the meridian, and set the index at 12.
Página 140 - ... small portion of the hemisphere on which the moon's shadow falls, it happens that for any particular place on the earth, lunar eclipses are more frequently...