A Text-book of PhysicsLongmans, Green, and Company, 1902 - 951 páginas |
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Página 6
... radius is of unit length . With the exception of the electrical units , it is with reference to the first two of these three possible modes of variation that all practical absolute systems differ amongst themselves . By far the most ...
... radius is of unit length . With the exception of the electrical units , it is with reference to the first two of these three possible modes of variation that all practical absolute systems differ amongst themselves . By far the most ...
Página 13
... radius of the circle . When a = r this of course reduces to one radian according to the definition . Since the length of the circumference of a circle of radius r is 2π ” , this arc will subtend 2 ′′ r / r or 2 ′′ radians at the centre ...
... radius of the circle . When a = r this of course reduces to one radian according to the definition . Since the length of the circumference of a circle of radius r is 2π ” , this arc will subtend 2 ′′ r / r or 2 ′′ radians at the centre ...
Página 14
... radius r , described about the FIG . 2 . point o as centre , then the angle 0 , B subtended by this arc at the centre , is equal to AB / r radians . If from B we A draw BC perpendicular to OA , then the following trigonometrical ...
... radius r , described about the FIG . 2 . point o as centre , then the angle 0 , B subtended by this arc at the centre , is equal to AB / r radians . If from B we A draw BC perpendicular to OA , then the following trigonometrical ...
Página 15
... radius ( r ) , we have , if [ 0 ] is taken to represent the dimensions of the unit angle , the relative [ 0 ] = [ 2 ] | [ Z ] = 1 . Thus an angle has dimensions zero with reference to all the fundamental units . As the dimensions of any ...
... radius ( r ) , we have , if [ 0 ] is taken to represent the dimensions of the unit angle , the relative [ 0 ] = [ 2 ] | [ Z ] = 1 . Thus an angle has dimensions zero with reference to all the fundamental units . As the dimensions of any ...
Página 21
... radius , = circumference 2r = 3.1416 . Ellipse Sphere ( surface of ) π.α.ό 4π.12 = a and b semi - axes . r = radius . The surface of an irregular plane figure may be determined experi- mentally by tracing the outline of the figure on a ...
... radius , = circumference 2r = 3.1416 . Ellipse Sphere ( surface of ) π.α.ό 4π.12 = a and b semi - axes . r = radius . The surface of an irregular plane figure may be determined experi- mentally by tracing the outline of the figure on a ...
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Términos y frases comunes
amplitude angle of incidence axis Boyle's law called calorimeter carbon dioxide centimetre Charles's laws circle coefficient colours column constant convex lens corresponding curvature curve cylinder density direction displacement distance equal equation force acting fork frequency gases given glass Hence horizontal hydrogen incident increase interval kinetic energy length lens light liquid magnet mass measured medium mercury mirror molecules motion moving object obtained octave overtones parallel particle pass pendulum perpendicular piston plane plate pole portion position pressure prism produced quantity of heat radiation radius ratio reflected rays refracted ray refractive index represent resonator right angles rotation scale shown in Fig solid sound-waves sounding body specific heat sphere straight line string substance suppose surface tension T₁ temperature tion tone tube unit vapour velocity of sound vertical vessel vibrations volume wave-front wave-length waves weight
Pasajes populares
Página 580 - 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.