The British Encyclopedia, Or Dictionary of Arts and Sciences: Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge : Illustrated with Upwards of 150 Elegant Engravings. N - R. 5Longman, 1809 - 680 pages |
From inside the book
Results 1-5 of 17
Page
... PARABOLA , in geometry , a figure aris- ing 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 aris- ing 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 GHO . Definitions . 1. The right line A B is called the directrix . 2. The point C is the focus of the parabola . 3. All perpendiculars to the directrix , as LK , MO , & c . are called diameters ; the points , where these cut ...
... parabola GHO . Definitions . 1. The right line A B is called the directrix . 2. The point C is the focus of the parabola . 3. All perpendiculars to the directrix , as LK , MO , & c . are called diameters ; the points , where these cut ...
Page
... parabola . Q. E. D. : Prop . 6. If from any point of a parabola , A , ( fig . 6 ) there be drawn an ordinate , AC , to the diameter BC ; and a tangent to the parabola in A , meeting the diameter in D : then shall the segment of the dia ...
... parabola . Q. E. D. : Prop . 6. If from any point of a parabola , A , ( fig . 6 ) there be drawn an ordinate , AC , to the diameter BC ; and a tangent to the parabola in A , meeting the diameter in D : then shall the segment of the dia ...
Page
... PARABOLA , Cartesian is a curve of the second order , expressed by the equation x y = ax3 + bx2 + cx + d , containing four infinite legs , viz . two hyperbolic ones , M M , B m , ( Plate Parabola , fig . 8 ) , ( A E being the asymptote ) ...
... PARABOLA , Cartesian is a curve of the second order , expressed by the equation x y = ax3 + bx2 + cx + d , containing four infinite legs , viz . two hyperbolic ones , M M , B m , ( Plate Parabola , fig . 8 ) , ( A E being the asymptote ) ...
Page
... Parabola , fig . 10 ) , and the curve of the in- cumbent parabola . The parabolic space is to the rectangle of the semi - ordinate into the absciss , as 2 to 3 ; to a triangle inscribed on the ordinate as a base , it is as 4 to 3 ...
... Parabola , fig . 10 ) , and the curve of the in- cumbent parabola . The parabolic space is to the rectangle of the semi - ordinate into the absciss , as 2 to 3 ; to a triangle inscribed on the ordinate as a base , it is as 4 to 3 ...
Other editions - View all
Common terms and phrases
absciss acid action ammonia angle animal appears axis benevolence body botany called calyx centre chyle circle class and order colour common compound connected consequently consists corolla degree distance distilled drupe Dubl earth ecliptic Edin effect employed equal Essential character feelings feet fixed flowers fluid fossil genus give glass heat Hence ideas inches instrument iron ject Jussieu kind less Lond manner matter means ment metal mind Monogynia class motion mucilage muriatic acid Natural order neral nitre nitric acid object observed organs organzine oxide oxygen parabola parallax parallel pass perpendicular person phosphorus piece plane plants Plate pleasures possess potash pounds principle produced proportion quantity racter ratio rays receiver refraction screw seeds sensation sensible side solution species specific gravity square stances substances sulphur supposed surface term thing tincture tion Triandria tube vegetable vessels volatile weight