British Encyclopedia: Or, Dictionary of Arts and Sciences, Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge, Volume 9Mitchell, Ames, and White, 1821 - Natural history |
From inside the book
Results 1-5 of 8
Page
... PARABOLA , in geometry , a figure arising from the section of a cone , when cut by a plane parallel to one of its sides . See CONIC SECTIONS . To describe a parabola in plano , draw a right line A B ( Plate Parabola , fig . 1. ) and ...
... PARABOLA , in geometry , a figure arising from the section of a cone , when cut by a plane parallel to one of its sides . See CONIC SECTIONS . To describe a parabola in plano , draw a right line A B ( Plate Parabola , fig . 1. ) and ...
Page
... parabola ; and as this holds of every other point , except H , it follows that K H is a tangent to the parabola in H. Q. E. D. Prop . 3. Every right line , parallel to a tangent , and terminated on each side by the parabola , is ...
... parabola ; and as this holds of every other point , except H , it follows that K H is a tangent to the parabola in H. Q. E. D. Prop . 3. Every right line , parallel to a tangent , and terminated on each side by the parabola , is ...
Page
... parabola . Q. E. D. Prop . 6. If from any point of a parabo- la , A , ( fig . 6. ) there be drawn an ordi- nate , A C , to the diameter B C ; and a tangent to the parabola in A , meeting the diameter in D : then shall the segment of the ...
... parabola . Q. E. D. Prop . 6. If from any point of a parabo- la , A , ( fig . 6. ) there be drawn an ordi- nate , A C , to the diameter B C ; and a tangent to the parabola in A , meeting the diameter in D : then shall the segment of the ...
Page
... parabola about its axis : its solidity is = of that of its circumscribing cylinder . The cir- cles , conceived to be the elements of this figure , are in arithmetical proportion , de- creasing towards the vertex . A parabo- lic conoid ...
... parabola about its axis : its solidity is = of that of its circumscribing cylinder . The cir- cles , conceived to be the elements of this figure , are in arithmetical proportion , de- creasing towards the vertex . A parabo- lic conoid ...
Page
... Parabola , & c . fig . 11. ) B T A , under which its true and apparent distance from the zenith is seen ; or , which is the same thing , it is the angle TS E. The sines of the parallactic angle A LT , AS T , ( fig . 12. ) at the same or ...
... Parabola , & c . fig . 11. ) B T A , under which its true and apparent distance from the zenith is seen ; or , which is the same thing , it is the angle TS E. The sines of the parallactic angle A LT , AS T , ( fig . 12. ) at the same or ...
Other editions - View all
The British Encyclopedia: Or, Dictionary of Arts and Sciences. Comprising an ... William Nicholson No preview available - 2015 |
Common terms and phrases
absciss action affections ammonia angle animal antimony appear association axis become benevolence birds body boiling botany called calyx centre circle class and order colour common compound connected consequence consists convex lens corolla degree dissolved distance distilled drupe Dubl Edin electuary employed equal Essential character excite feelings fixed flowers fluid fossil frequently genus glass happiness heat Hence ideas inches Jussieu kind less Lond manner means ment metal mind Monogynia class moral motion mucilage muriatic muriatic acid Natural order neral nitrate nitre nitric acid object observed obtained Oleum organzine oxide oxygen pains parabola parallax parallel passions pendulum perpendicular person plane Plate pleasures potash principle produced quantity Radix rays refraction respect salt seeds sensation shell side sion solution species specific gravity substances sulphur supposed syrup term tinc tincture tion ture vapour vessels weight