An Introduction to the Use of the Globes ... 3. Ed. Corr. and EnlBaldwin, 1816 |
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Side 40
... globe turns . 3. The axis of the earth is an imaginary right line passing through its centre , upon which it is sup- posed to turn , and is that line on which the artificial globe turns . 4. The horizon is the broad frame in which the ...
... globe turns . 3. The axis of the earth is an imaginary right line passing through its centre , upon which it is sup- posed to turn , and is that line on which the artificial globe turns . 4. The horizon is the broad frame in which the ...
Side 49
... globe , care being taken to correct for the variation of the needle , which has already been observed at p . 29 to have been 24 ° 16 ′ W. at London in 1814 , therefore turn the globe to the right , or left , till the needle stands over ...
... globe , care being taken to correct for the variation of the needle , which has already been observed at p . 29 to have been 24 ° 16 ′ W. at London in 1814 , therefore turn the globe to the right , or left , till the needle stands over ...
Side 50
... globe for . Raise the S. pole until 55 ° 58 ′ coincide with the upper surface of the horizon , bring the Cape to the ... globe . Turn the globe until the given longitude comes to the graduated edge of the brass meridian , then under 50.
... globe for . Raise the S. pole until 55 ° 58 ′ coincide with the upper surface of the horizon , bring the Cape to the ... globe . Turn the globe until the given longitude comes to the graduated edge of the brass meridian , then under 50.
Side 51
... turn the globe quite round , and all those places that pass under the mark have the same lati- tude , viz . 51 ° 30 ′ N. * * The globe may be marked , at any particular part of a problem , by a pencil , a bit of chalk , or small patch ...
... turn the globe quite round , and all those places that pass under the mark have the same lati- tude , viz . 51 ° 30 ′ N. * * The globe may be marked , at any particular part of a problem , by a pencil , a bit of chalk , or small patch ...
Side 52
... turn the globe until the index points to the lower XII ; and the place under the mark is the periœci required . Given London ; required its periœci ? Answer , under 51 ° 30 ' N. lat . and 180 ° E. or W. lon . in the sea of Kamschatka ...
... turn the globe until the index points to the lower XII ; and the place under the mark is the periœci required . Given London ; required its periœci ? Answer , under 51 ° 30 ' N. lat . and 180 ° E. or W. lon . in the sea of Kamschatka ...
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An Introduction to the Use of the Globes ... 3. Ed. Corr. and Enl John Greig Uten tilgangsbegrensning - 1816 |
Vanlige uttrykk og setninger
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
Populære avsnitt
Side 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.
Side 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.
Side 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.
Side 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...
Side 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.
Side 66 - ... bring the given place to the meridian, and set the index to the given hour. Turn the globe till the index points to...
Side 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...
Side 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.
Side 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.
Side 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...