An Introduction to the Use of the Globes ... 3. Ed. Corr. and EnlBaldwin, 1816 |
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Side 11
... given line , A B , into two equal parts . 1. With any opening of the compasses greater than half A B , making A and B centres , describe arcs cut- ting each other in o r . 2. Through these points draw the line or , and 11.
... given line , A B , into two equal parts . 1. With any opening of the compasses greater than half A B , making A and B centres , describe arcs cut- ting each other in o r . 2. Through these points draw the line or , and 11.
Side 17
... opening of the compasses , greater than half the distance between A B and B C , and one point in A , describe an arc , with the same opening and one point in B ; cross the former arc in n and m , with the point in B and 17.
... opening of the compasses , greater than half the distance between A B and B C , and one point in A , describe an arc , with the same opening and one point in B ; cross the former arc in n and m , with the point in B and 17.
Side 18
... , A B. 1. With any opening of the compasses , greater than half A B and one point in A , describe an arc with the same opening and one point in B , cut the former arc in n . 2. Through no draw the line no D , and 18.
... , A B. 1. With any opening of the compasses , greater than half A B and one point in A , describe an arc with the same opening and one point in B , cut the former arc in n . 2. Through no draw the line no D , and 18.
Side 23
... half tangents of their respective distances , taken from the scale , on the line marked S T , from the centre of the circle s , both ways on the colure , which will give the divisions through which the parallels , & c . are to pass ...
... half tangents of their respective distances , taken from the scale , on the line marked S T , from the centre of the circle s , both ways on the colure , which will give the divisions through which the parallels , & c . are to pass ...
Side 24
... half tan- gents from the ane scale , is only applicable when } the radius of the sphere is taken from the line of chords . To find the points of section for any given radius , open the sector until the distance between C - C is equal to ...
... half tan- gents from the ane scale , is only applicable when } the radius of the sphere is taken from the line of chords . To find the points of section for any given radius , open the sector until the distance between C - C is equal to ...
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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...