A Plain Elementary and Practical System of Natural Experimental Philosophy: Including Astronomy and ChronologyHopkins and Earle, 1809 - 538 страници |
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Страница x
... observe the cause . On the spot where it seemed disposed to alight in its flight , he observed a snake , which had evidently fixed on its victim , and fascinated it beyond the power of escaping by its own efforts . He frightened the ...
... observe the cause . On the spot where it seemed disposed to alight in its flight , he observed a snake , which had evidently fixed on its victim , and fascinated it beyond the power of escaping by its own efforts . He frightened the ...
Страница xix
... and of the Transit of Mercury , November " 9th , 1769 , both as observed in the statehouse , Philadelphia . " " An improvement in the construction of Godfrey's Quadrant . " Dobson . About the year 1795 , he commenced the xix.
... and of the Transit of Mercury , November " 9th , 1769 , both as observed in the statehouse , Philadelphia . " " An improvement in the construction of Godfrey's Quadrant . " Dobson . About the year 1795 , he commenced the xix.
Страница xxi
... observations and deport- " ment in the different relations of society , declare " that his mind was uncommonly strong and penetra- ting , and that he had a mild and correct taste . Were " we to distinguish between his powers , we would ...
... observations and deport- " ment in the different relations of society , declare " that his mind was uncommonly strong and penetra- ting , and that he had a mild and correct taste . Were " we to distinguish between his powers , we would ...
Страница 4
... observations and numerous experiments , that have been since made , whereby the falsehood of many received errors has been detected , and many phenomena discovered , of which he had no knowledge . It is no wonder , then , that he should ...
... observations and numerous experiments , that have been since made , whereby the falsehood of many received errors has been detected , and many phenomena discovered , of which he had no knowledge . It is no wonder , then , that he should ...
Страница 5
... observations , to neral axioms ; which he adopted as certain and general principles , without any farther examination : whereas he should have proceeded cautiously , step by step , and have reserved the most general principles , for the ...
... observations , to neral axioms ; which he adopted as certain and general principles , without any farther examination : whereas he should have proceeded cautiously , step by step , and have reserved the most general principles , for the ...
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Често срещани думи и фрази
acquired altitude angle of incidence angle of refraction appear arch atmosphere attraction axis bulk called center of force central force circle colour concave concave lens converge convex lens curve cycloid degree denser medium density descend diameter direction diverge earth ecliptic elastic electricity ellipsis equal equator fall feet fluid focal distance friction given glass globe greater greatest half heat heavy body Hence hole horizon increased inversely latus rectum length less magnet mercury meridian mirror moon moon's motion move nearer nonconductor object observed octave orbit parabola parallel particles pass pendulum perpendicular plane Plate pole pressure prime conductor produced projectile proportional quantity of matter radiant point radius rays of light reflected reflexion retina revolving right ascension round side sine sound space specific gravity square root string sun's surface syzygies tance tangent telescope thereby tides tion tube velocity vessel vial vibrations weight wheel wind
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Страница iii - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
Страница iii - An Act supplementary to an Act, entitled " An Act for the Encouragement of Learning, by securing the copies of Maps, Charts, and Books, to the authors and proprietors of such copies during the time* therein mentioned," and extending the benefits thereof to the arts of designing, engraving, and etching historical and other prints.
Страница 264 - When a ray of light passes from one medium to another, it is refracted so that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities in the two media.
Страница iii - An Act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprietors of such copies during the times therein mentioned." And also to the act, entitled " An Act supplementary to an Act, entitled, " An Act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprietors of such copies during the time therein mentioned," and extending the benefits thereof to the arts of designing, engraving, and...
Страница 266 - This amounts to the same with saying, that, in the case before us, the sine of the angle of incidence is to the sine of the angle of refraction in a given ratio.
Страница xiii - Alison, his former tutor and friend, and, after the usual period of preparatory study, he was licensed to preach the Gospel by the presbytery of Newcastle, in the state of Delaware.
Страница 162 - And hence, as the specific gravity of the fluid is to that of the body, so is the whole magnitude of the body to the part immersed.
Страница xxiv - His own investigation confirmed him in his belief of the doctrines of grace. These were the doctrines which he preached and which he endeavoured to impress upon the hearts of his people.* His discourses were written with accuracy; the truths which they contained were well examined and digested before he ventured to offer them to the public. He thought it a duty which he owed to his God and his hearers, to think before he spoke, to study and to ponder in private, before he arose in the presence of...
Страница xxvi - ... pastoral charge. The only serious disorder which he had, was the one which proved fatal, and which first seized him (in 1796) six years before his death. After his first attack he frequently preached, but never regained his strength of body, or vigour of mind. In his sickness he discovered patience, fortitude and resignation to the will of his heavenly Father. No murmur escaped his lips, and his last moments were closed apparently without a pang and without a struggle. In a good old age, in his...
Страница xxv - ... that weep. He was perfectly free from pedantry, and from every thing that bore its resemblance. In the company of philosophers, he was in his conversation the philosopher, and with the unlettered, the man of ease and accommodation. His talent of narration was universally admired. His observation of men and manners in this country and abroad furnished him with many scenes and facts which as painted and related by him were extremely entertaining. In domestic life he was amiable. He had all the...