Dialogues on the First Principles of the Newtonian System, Τόμος 4J. Parker, 1828 - 68 σελίδες |
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Αποτελέσματα 1 - 5 από τα 16.
Σελίδα 27
... centre of the earth , and each planet to the centre of the sun . B. That is unquestionably the fact ; but it would be a fact of little importance , if we were not able further to ascertain the degree and mea- sure of this attraction . A ...
... centre of the earth , and each planet to the centre of the sun . B. That is unquestionably the fact ; but it would be a fact of little importance , if we were not able further to ascertain the degree and mea- sure of this attraction . A ...
Σελίδα 29
... centre of the earth's shadow will then be at the same alti- tude above the horizon as the centre of the moon . A. How does that appear ? B. Thus : Let the circle of which M is the Prop.XVII . A. centre represent the moon , and the ...
... centre of the earth's shadow will then be at the same alti- tude above the horizon as the centre of the moon . A. How does that appear ? B. Thus : Let the circle of which M is the Prop.XVII . A. centre represent the moon , and the ...
Σελίδα 30
... centres of both circles . A. Why must it pass through their centres ? B. Because if the centre of either circle be supposed to lie any where out of that line , as at D , and lines be drawn from that supposed centre to the points A , B ...
... centres of both circles . A. Why must it pass through their centres ? B. Because if the centre of either circle be supposed to lie any where out of that line , as at D , and lines be drawn from that supposed centre to the points A , B ...
Σελίδα 31
... centre of the earth . Thus , let HO be our horizon , ( viewed edgewise , Prop.XVII . so that from a circle it becomes a straight line , ) and AB a line drawn parallel to it through the centre of the earth ; and let OPS be the estimated ...
... centre of the earth . Thus , let HO be our horizon , ( viewed edgewise , Prop.XVII . so that from a circle it becomes a straight line , ) and AB a line drawn parallel to it through the centre of the earth ; and let OPS be the estimated ...
Σελίδα 32
... centre from the centre of the earth , has been found to equal about 60 such semidiameters , or 240,000 miles . A. By comparing this distance with the appa- rent magnitude of the moon I presume that her real dimensions may also be ...
... centre from the centre of the earth , has been found to equal about 60 such semidiameters , or 240,000 miles . A. By comparing this distance with the appa- rent magnitude of the moon I presume that her real dimensions may also be ...
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Dialogues on the First Principles of the Newtonian System Walter Henry Burton Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2009 |
Συχνά εμφανιζόμενοι όροι και φράσεις
altitude angle ABC angle ACB angle MPH arithmetical progression ascertain attraction bisect centre of gravity centripetal force circle circumference common centre curve curvilinear figure ABC definite diagonal DIALOGUE diameter difference direction divided drawn parallel ellipses equal bases exterior angle fixed point fraction greater hypothenuse indefinitely small portion instance law of motion line BD line be drawn line drawn magnitude monstration moon move multiplying number of equal number of longitudinal number of terms observed orbit parallel lines parallelogram pass perpendicular planets produced Prop proportional proportionate proposition prove quantities of matter quotient radii radius rallel ratio rectangle CD rection represented respectively equal right angles round the earth SBD is equal single impulse space square described square of CD square root straight line sun's supposed supposition thing three angles three sides tion triangle ABC uniform velocity wind XXIII
Δημοφιλή αποσπάσματα
Σελίδα 2 - Certainly, it is heaven upon earth, to have a man's mind move in charity, rest in providence, and turn upon the poles of truth.
Σελίδα 2 - If two triangles have two sides of the one equal to two sides of the...
Σελίδα 19 - Equal triangles upon the same base, and upon the same side of it, are between the same parallels.
Σελίδα 37 - IF a straight line be divided into two equal, and also into two unequal parts ; the squares of the two unequal parts are together double of the square of half the line, and of the square of the line between the points of section.
Σελίδα 2 - Euclid's, and show by construction that its truth was known to us ; to demonstrate, for example, that the angles at the base of an isosceles triangle are equal...
Σελίδα 10 - Prove that parallelograms on the same base and between the same parallels are equal in area.
Σελίδα 51 - Multiply one half the sum of the first and last terms by the number of terms. Thus, the sum of eight terms of the series whose first term is 3 and last term 38 is 8 x * (3 + 38) = 164.
Σελίδα 19 - Parallelograms on the same base, and between the same parallels, are equal to one another.
Σελίδα 38 - Two parallelograms are similar when they have an angle of the one equal to an angle of the other, and the including sides proportional.
Σελίδα 6 - Then, because the three angles of every triangle are together equal to two right angles, [I.