A Plain Elementary and Practical System of Natural Experimental Philosophy: Including Astronomy and ChronologyHopkins and Earle, 1809 - 538 Seiten |
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Seite 42
... horizon , and nearly in the direction of the meri- dian ; and lastly , by preparing and polishing two pieces of steel , and arming one of them with a cap of the same : then , if the unarmed piece be held in the magnetic meridian , and ...
... horizon , and nearly in the direction of the meri- dian ; and lastly , by preparing and polishing two pieces of steel , and arming one of them with a cap of the same : then , if the unarmed piece be held in the magnetic meridian , and ...
Seite 43
... horizon in an angle of some degrees , towards the north ; which seems to be owing to its losing some of its gravity from the south end of the needle ; as the whole needle has been found by many experiments to weigh less than before the ...
... horizon in an angle of some degrees , towards the north ; which seems to be owing to its losing some of its gravity from the south end of the needle ; as the whole needle has been found by many experiments to weigh less than before the ...
Seite 44
... horizon- tal needle . The reason of this seems to be the lessen- ing of the magnetic and directive virtue by the heat of the sun , and thereby leaving the needle to verge towards the colder parts of the atmosphere . The power of a ...
... horizon- tal needle . The reason of this seems to be the lessen- ing of the magnetic and directive virtue by the heat of the sun , and thereby leaving the needle to verge towards the colder parts of the atmosphere . The power of a ...
Seite 101
... horizon before the horses and below their breasts , so that in drawing they in some measure lift the load over any obstacle , while a contrary inclination would press the load into the earth and increase the difficul- ty of drawing it ...
... horizon before the horses and below their breasts , so that in drawing they in some measure lift the load over any obstacle , while a contrary inclination would press the load into the earth and increase the difficul- ty of drawing it ...
Seite 111
... horizon . Now since the body gravitates in the direction CFB , let CF represent its absolute force of gravity . This force may be resolved into two , by the second law of motion , viz . CE and EF , of which CE being perpendicular to the ...
... horizon . Now since the body gravitates in the direction CFB , let CF represent its absolute force of gravity . This force may be resolved into two , by the second law of motion , viz . CE and EF , of which CE being perpendicular to the ...
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A Plain Elementary and Practical System of Natural Experimental Philosophy ... John Ewing Keine Leseprobe verfügbar - 2015 |
Häufige Begriffe und Wortgruppen
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
Beliebte Passagen
Seite 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...
Seite 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.
Seite 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.
Seite 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...
Seite 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.
Seite 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.
Seite 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.
Seite 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...
Seite 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...
Seite 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...