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angle angle of incidence Archimedes attraction auditory nerve axis bell bound in cloth Boyle's law called centre of gravity centrifugal force circle circumference colours compression constant cord cross section dark band denote described diameter direction distance elasticity equal and opposite equation equilibrium experiments fall feet per second fluid force of gravity friction gases gilt given glass harmonic horizontal hydrometer inches inclined plane inertia interval inversely latent heat lens light liquid means measured mercury mirror molecules morocco motion move number of vibrations observed octave particles pendulum perpendicular piston placed pressure principle produced proportional proved pulley quantity of heat radius reflected reflexion refraction Resistance scale-pan screw shown in Fig sound space specific gravity square surface temperature triad tube velocity velocity of sound vertical volume wave length weight
الصفحة 167 - Harp of my Country! in darkness I found thee, •*— ' The cold chain of silence had hung o'er thee long, When proudly, my own Island Harp, I unbound thee, And gave all thy chords to light, freedom, and song ! The warm lay of love and the light note of gladness Have wakened thy fondest, thy liveliest thrill ; But, so oft hast thou echoed the deep sigh of sadness, That even in thy mirth it will steal from thee still.
الصفحة 99 - ... that the squares of the periodic times of the planets are proportional to the cubes of their mean distances from the sun.
الصفحة 256 - Price 6d. Natural History, Cassell's Popular. Profusely Illustrated with splendid Engravings and Tinted Plates. Complete in Two Volumes, bound in cloth, 30s. Do., Two Volumes, half-calf, full gilt back, 45s. Do., Two Volumes, halfmorocco, full gilt, 50s.
الصفحة 261 - Little Songs for Me to Sing. Illustrated by JE MILLAIS, RA ; with Music composed expressly for the Work by HENRY LESLIE. Square Crown (Dedicated, by express permission, to Her Royal Highness the PRINCESS OF WALES) 6s. The Child's Garland of Little Poems ; Rhymes for Little People. With Exquisite Illustrative Borders by GIACOMELLI.
الصفحة 147 - Wollaston called attention to the sound, or susurrvs, produced by the muscles when in a state of contraction. He states correctly that this sound is best produced by inserting gently the extremity of the finger into the ear, bringing at the same time the muscles of the hand and fore-arm into strong contraction. The...
الصفحة 143 - Trunk Piston types. Plunger steam engine. The internal combustion engine is usually single-acting, so its piston is of the trunk type. A trunk-type piston is one which has the shape of a short cylinder closed at one end, and open at the other. The closed end forms the piston face, in contact with the working medium. The remainder of it is the skirt of the piston, and is provided to align the piston properly in the cylinder, to support the wrist pin, and to provide bearing area on the cylinder wall...
الصفحة 261 - DEDICATED TO THE PRINCESS BEATRICE. The Children's Garden, and What they Made of it. By AGNES and MARIA E. CATLOW. With several Illustrations.
الصفحة 99 - The line joining the planet to the sun sweeps out equal areas in equal times.